Yes I would want the weight and tractor rings, reason being that any changes to that > then you would have to make the pristine steel crank look like swiss cheese, holes drilled in your nice balancer and would cut the value in half. Changes to the factory specifications means that the rest of the rotating assembly would have to be modified (drilled welded) to accommodate the "light" pistons.
I have seen singles for sale that were made by Ford (in Motorsport boxes) that were probably made in the 80's or 90's but haven't seen any complete sets. They looked identical to the early C5AE pistons.
Not building a race motor. Just want a exact replacement piston just "New" .030
Want to absolutely minimize "Machining" on parts to balance.
Thanks again wait to hear.
No changes to the balancer.
No metal added.
No swiss cheese.
Unless you're changing to a lighter rod from the factory grenades (as in going to a Molnar rod), you probably won't show a large difference in bobweight.
Any ring skinnier than 5/64 or 1/16 is not "race". The OEM has been using much, much smaller ring pack sizes for a very long time.
If you can't find any Ebay specials, it would be very easy to duplicate the factory piston volume, compression height, etc., with a new forged piston.