Stock '69 318, t-quad vs q-jet vs holley vs edelbrock?

if you're familiar with autolite carbs, then you'll be comfortable with holly stuff. a well tuned vacuum 2ndary in a reasonable size will give great performance and very decent gas mileage.

the AVS2 is another excellent choice.

manifold wise, considering you're putting it on a 318 with a 2bbl cam i'd be looking at small port dual planes. edelbrock performer would be an excellent choice, as would weiand action plus, or an offy.

edelbrock makes adapters to run square bore carbs on spread bore manifolds. no big deal.

be sure to update your carb linkage AND your transmission kick down!

headers-- buy once, cry once. get dougs or TTI they fit 10X better and are double the quality.