the guys here are pointing you in the right direction, a "little punch" can be a bit ambiguous, so for hp sake, with significant mods in cam/carb/exhast/boring out a 261 can acheive little better than 200 rear wheel hp, maybe 220-230 rwhp, naturally aspirated of course, with massive work/money whereas a well built 292 at half the cost of rebuilding will easily surpass this with the same mods at half the cost, but like they said it requires some fab to go in, some guys here get 250-275 rwhp from their 292's very easily. ope this heps!
