Man I wish I could build more of those 780s. They are awesome.

2x4 600s are fine for most builds.

Personally, for you, I’d recommend getting with Drew at Air-Fuel-Spark. He specializes in both restoring original Ford/Holleys, and building really nice, generally correct looking, common Holleys for Ford 2-4 bbl set-ups. The ones he builds will have the correct throttle shafts for the factory style linkage, and a good calibration for 2-4 bbl usage. Like Joe said, Drew can help pick you a size based on the specs of your particular engine, and how you intend to use it. In my opinion the 450’s are too small, and no, the factory 600’s aren’t too big, you have to remember they are vacuum secondary carbs. Drew builds carbs from his cores periodically and puts them up for sale. Just be aware the carb business isn’t his only career, might take a bit to get what you need, but it would be worth it to save tuning hassles. He has a website & facebook page.

https://www.afscarbs.com/

Hello Everyone
I am after some advice and recommendations on who/ where is the best place to get 2 new carburetors for a ford fe 445 stroker also what cfm size would work best? Dual 450cfms? Dual 600cfms?
I have built a 445 fe stroker engine to replace the original 428 pi in a 67 gt500 so the original motor can be shelved/preserved.
Although the stroker motor has trick flow cyclinder heads (painted blue and the name filled in)the motor has been built to look factory stock as best as possible to the untrained eye.
I understand the factory set up uses the 600cfm bk/bj carbs and I could swap them over however i would rather leave the original carbs on the original motor and this is one area where I would rather just get some new more modern carburetors with better tuning abilitys and saftey features with the glass sight windows in the side for checking fuel levels ect. Carburetor colour finish as well doesn't really bother me in this area(factory gold of the 60s holleys vs new aluminium finish on quick fuels for example)
I am running the c7zx-9425-a  medium riser blue thunder 8v intake manifold and also have the dual carb throttle linkage made by blue thunder.
I have done some research and understand about the factory original carbs like the 600cfm bk/bj carbs that have ford specific throttle shafts that work with the factory linkage.
So my question is which brand holley/quick fuels is best to go with and what models? What cfm rating would you recommend dual 450cfms/600cfms.
Is dual 600cfms to much I read an article once I believe in hotrod magazine where they tested dual carbs on a fe and the smaller carbs worked better I believe?
All of you running or building dual carbed fe engines is there someone that you could recommend website/person that could spec me two carbs for my fe that would be all good and ready to go with just normal minor adjusting and tuning so they have the right throttle shafts ect?
Any help and advice you could give me is much appreciated. I have been researching this question for days and I hate to ask dumb questions but this is something I need to get right the first time and could use any information or help given.
Many thanks for your time.
Have a nice day.

Paid $675 a few years ago and never used. $625 shipped domestic only. Thanks

Didn't catch the stainless part.  My bad.