I think that Walt, El Plymino, and Twisted 6 are right in it should have a removeable top carb plate. Larry, maybe I could try 3x4's? A nitrous bung may be a little too much for me. I really don't see any reason to run nitrous other than at the drag strip or at Bonnie. I was thinking that the intake plenum was a bit generous as it is 3" high by 25.5" long. That's a lot of swirling gas and air going on. Perhaps the plenum should be as tall as the runners and the plenum should be at least 3" away from the head.
Thanks for all of youe suggestions. I use them in the next design modification. I'll post it when I'm done. Peter, I knew that someone would ask to have more than one fab'd. I plan to make up a jig so my buddy can do all the welding without any hesitations.
RapRap
1940 ChoppedChevyCoupe.