I agree with most of the suggestions here, the important thing is to pay close attention to the advice being given. For example, if you’re going to use a 318 short block make sure it’s a 68 or 69, so you’re getting the high compression block. Once you bolt your 920 heads on it the C/R difference is minimal, and will make it better suited to modern pump gas. If you want to keep your ride height low, use your 273 manifolds or go with Dougs or TTI headers. Since you have the standard intake bolt setup, an Eddie performer would be good, an air-gap would be better (don’t forget aluminum intakes and headers will also shed weight compared to iron anything) The aluminum vs steel wheels advice is solid... I make sure to determine the weight of the aluminum wheels before buying. If you decide to home-port/gasket match anything you might as well port everything (intake to head, head ports, and exhaust manifolds. Spec your carb carefully and once you decide on your parts list check with the guys here about a cam. I believe you could go for a Comp XE268H with what you have now plus a hi-comp 318 block. 3:23’s are alright street gears, but with the build you’re doing find a 2500-2800 TC - you’ll be surprised how it wakes up a mostly stock setup.
