318 comp cam
If you look at the 5 or so builds from 282-477hp they all make about the same torque at 3000 rpm 335-355tq over stock ish 287 tq most don't show dyno # under 3000 rpm except stock ish 2bbl with headers 287 @ 2500 rpm and 292 tq @ 2000 rpm and the 477 hp made 337 tq @ 2500 rpm, I'd say it safe to say every modified engine made more torque/hp from at least 2000 rpm and up. Dyno shows the 318 bottom end Torque ain't as fragile some makeout so you don't have to strangle your engine to make torque but still you want to build a package that focus on 1500-4500 rpm while not snuffing out 4500-5500 rpm.
Better your heads within reason the better the outcome and requiring less cam, for a more streetable package.