Re: 327 build
The most power ? 383 without a doubt. That 750 CFM carb. is too big for a 327. It would be just fine on a 383. The 327 would be a high winding engine. The 383 will be a low end torque monster. I have a 327, like you mention, I wish it was a 383.
If I was to build one, I would go with RHS Pro-Action Iron heads and a Lunati 60103 cam.
69 Camaro -originally a LM1 car. 327, Edelbrock E-streets, hooker, DUI performance distributors, ultradyne cam, stewart, TRW etc. Vintage Air, AGR steering, Corbeau GTSII seats, 700R4 transmission, 12-bolt w/Eaton 4.11:1