SBC SWAP IN A 64 BARRACUDA?

Tried not to sound "closed minded", that's why I pointed out the differences that will need to be overcome- just because he may have the parts doesn't necessarily make it practical, and there may be more viable options out there.
In the end, as I said, it's his car. He can do whatever blows his skirt up. But mainly, he needs to be aware of the challenges he's facing and make sure they're realistically within his skill set.
And yes, the 8.75 can live just fine at those power levels. But I need to ask; if you're using an 8.75, what is the advantage of using the Corvette frame once you dispose of the IRS? Just curious.
Well I certainly can’t speak for the op but what if he’s building a gasser? Then it needs a full frame and a solid axle. Just a thought.