I had that same manifold on my big block for a while and I ran this gasket. A little thicker than some. Helped keep heat out of the carb IMO..

https://www.summitracing.com/parts/edl-9...ASABEgKTl_D_BwE


1969 Dodge Coronet Super Bee 383 A4
1970 Plymouth Road Runner 440 FC7 (sold)