Which intake manifold

when I was driving my Slant6 70 Challenger as a daily driver. I too wanted to step up the performance value of the Dodge. Since the engine was a 1977 p-nut plug replacement engine for the original. I decided to go the route of a cast iron Super Six manifold with a BBD 2bbl off a 318. I had a choice of an aluminum 2 bbl and an Offenhauser 4 bbl intake but I chose the cast iron factory intake for less daily driving problems. This was about 25 years ago, I think I made a good choice.