To sleeve or start over?

So I’ve got to make a decision. I think I’d really like to stick with the 318 for this car (’73 Duster) as I’ve already got the Performer intake, and Edelbrock 1406 carb, 302 heads, Lokar throttle and kickdown, and 340 exhaust manifolds, as well as a virtually brand new Comp cam (XE262h-10).

All of that ^^ would bolt right on a 360 block. Just tossing it out there.