If it has an OE iron 4bbl intake/thermoquad, that intake flows very well & the TQ would be OK if rebuilt correctly & probably jetted a bit richer tho an earlier TQ would be better for performance. Dial in the dist subsystems, initial/total(35)/springs/vac adv in order. If going with an aluminum intake I'd suggest a dual plane with a spreadbore flange for a TQ but with a pickup you'd likely have room for a spreadbore adapter on a square bore intake if going with a spreadbore TQ or go with a 1406 Eddy 600 cfm carb (which is a square bore) on a square bore intake or use the thin flat adapter to run it on a spreadbore intake. #1 As said a CORRECT cam to build some torque as the SCR is very likely in the high 7's right now
& a good double roller timing chain set. #2 dial in the dist spot on