Rebuilding engine- Need advice (and to vent)

Yep. I'd leave that carb right on top of it's intake after getting it perfect. Headers are for 318 cars. HP manifolds are fantastic on the street and won't bottom out everywhere.

The U Code 440 '73 Charger that I did the P/S pump replacement in, in it's color is something like, 1 of 1? That Roadrunner is not an easy find.