Here's the setup... 350 with Air-gap intake, Holley carb with 1/2" spacer. Any ideas on what size and style of air filter will work with a S.S. hood? Thanks in advance for answering this!

well... I been told the air gap and rpm are the same hieght?

Under my SS hood, I have a sbc on 327 mounts, perf rpm, 1" spacer, edel1406 carb, and edelbrock standard drop base air cleaner with 14x3 filter.

I'm REAL close. Edelbrock also sells a slightly (3/8") taller base that clears the electric choke better, that one did NOT fit.

Get some clay, PlayDoh, or weather caulking strips, and roll yourself two columns of clay and stick one per rear & front fuel bowls of the carb.

Shut the hood, open the hood, and measure the height. Subtract 1/2-3/4 inch for movement and you have the total height needed for an air cleaner.

Thanks Jim. Everett, that is a GOOD idea. I'm sure glad I belong to this site. I learn more here on accident than I do on any given day! Thanks!!!