Ideas on engine options for 71 Formula Brewster Green

[71-Formula]

So I'm torn on powering this car. Since the car is original to my family from 71, do I modernize the existing engine Pontiac 400 with someone like Butler OR do I go LT4 or something similar?

I want to be in the 750 plus hp range and forced induction for sure.

Would love some ideas and perhaps some pics on other F body Bird or Camaro builds in the engine compartment.

Thanks



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