Alan, I had a 1977 F250 Super Cab (Ranger, XLT, Camper Special, if you want the full title)
I did some dB meter testing inside the cab to get a baseline and with the windows up, going down the highway at 60-65 mph, it was in the 98dB-100dB range.
This was a solid truck, in good condition, with good door seals and such.

Then I started messing around with things to get it quieted down. I started with Dynamat Xtreme.
I covered the entire roof where the interior trim and roof panel was located.
I covered the entire floor, including the extended cab area.
I covered the insides of the doors... Lots of Dynamat used in many areas.

This did produce some sound deadening, but the measurements were still in the 92dB range... meaning still loud while going down the highway.

I had highway rib tires by General (10 ply 265/75-16), and they were not loud in the least.
I did have a performance exhaust, but I built that to be quiet, so it was not too loud. Hooker Super Comp long tube headers, dual 3" pipes going into a single 5" mixing chamber, then into dual 3" pipes again, into dual GIANT Dynomax Super Turbo mufflers (3"in, 3" out) and then into dual 3" tailpipes exiting at the passenger rear quarter between the rear tire and the bumper. It flowed great but was very quiet too.

Still, the truck was loud, so I began trying to figure out why.

Through many iterations of covering, removing, and testing I found the major noise was plain old wind noise across all the various high spots of the trucks design.
Rain gutter noise, windshield trim noise, cowl vent noise... just pick a spot because these trucks are like a porcupine with all the things sticking into the air just enough to make wind noise.

But the worst, by far, were the extendable towing mirrors mounted on the doors with the factory bridge girder system... You know the style with the four mounts on the doors using stainless steel tubing.

I removed those as a test one day and BAM! Holy shit! The truck was suddenly quiet. It was not sedan quiet, but it was no longer so loud you needed to speak way up to talk with passengers.
I never would have guessed the mirror mounting system alone was making THAT much noise.

My advice, install the sound deadening materials because they do remove a good amount of general noise in these old trucks.
If you can, install a transmission/rear gears/tires that allow you to run down the highway around 2100-2300 rpm at speeds you will cruise most of the time (around here that is 65 mph)
This lowers the clatter and general noise of the truck too.

But, if your truck has the big eared towing mirrors, and you are looking to quiet things down, get those off the truck to decrease the interior noise immediately.

My problem, at least on an F250, is I like the look of the towing mirrors, especially the tall thin "California" style towing mirrors that would have been on the 1967.

Royce, you might try figuring out how the shaded area is applied to the new windshield.
If it is cast into the laminate you are stuck with it, but if the shading is layered on the glass, either inside or outside, you may be able to buff the color off before installing the glass.

What I get from this is buy your engine parts and pay your engine building machinist to balance those parts during the build.

Can you imagen changing the plugs on that thing when it's in a car   

With the plugs being like they are I would imagine changing them from below would be relatively easy... from on top, not so much.

I'm not certain, but didn't someone in Canada make some aluminum FE heads in the mid to late 1990's?

$140,000 is a LOT of money for a 1979 Lincoln...even a collector series version.
I have been participating with BaT basically since its inception and there are a few things I keep in mind to help me unravel some of the mysteries.

1) Any agreed upon deal between a buyer and seller is a good deal... to them. Nothing else really matters because they made the deal and they figured things out for themselves.
2) Any time I get to thinking I understand the value and market for vehicles something happens to blow a big hole in that theory.
3) Sometimes the "reserve not met" auction ending, of a very high price offered, is just as astonishing as a very high selling price. It also makes me wonder what the reserve was and why BaT authorized the auction in the first place. I have been involved with the potential sale of a few vehicles that were refused because the reserve was too high and BaT said no because of that... Even though the reserve was not even close to the high prices paid for similar vehicles in similar condition. It makes me wonder.
4) When I see a very high price paid for a vehicle like the 1979 Lincoln (I really like that era Continental by the way so no hate here) it also makes me wonder if a percentage of the high vehicle sales is really money laundering... When I see modified early Broncos selling for $300,000 - $500,000 I just have to wonder why... same with seeing a 1979 Lincoln (even if perfect) selling for $140,000.

It IS a very nice car, and you will likely never ever find another in similar condition, but still... $140,000?
Then I revert back to answer #1 and go about my day because the buyer/seller agreed to the $140,000 (plus fees and taxes which will be in the $22,000 range... which is what a really nice 1979 Lincoln usually gets when auctioned as the selling price)

Bring a Trailer is an unusual auction site that offers a lot to take in if you are so inclined.

The front wheel well openings are very close between the 1965/1966 models, but I'm not sure if they are the same.
The rear wheel well openings are different between the 1965/1966 models. 1965 rears are shorter.
I know the rears won't interchange, but I have never tried the fronts.

Greg, look into how an MSD box is wired into a Ford Duraspark system. You might find your answers here.
MSD has the schematics for a few different wiring methods.
1) MSD box all on its own, wired outside the factory wiring harness.
2) MSD box all on its own but grafted into the factory wiring harness. (Using the factory Duraspark plugs and wires)
3) MSD box wired in conjunction with the factory Duraspark system, effectively giving the option to run either system should one system fail... like a backup system.

The early MSD box users often ran both systems because they thought having the backup (Duraspark) was a good idea should the MSD box fail.

Does the truck have a factory tach?.. Or did it have an aftermarket Tach?
Sometimes people tried weird things to get the tach to work with the MSD box and ended up with a big problem after butchering the harness attempting different things.