[J_E_S_B69]

Would a smaller engine with a centrifugal blower tweaked to produce mid 500's Horsepower be better or worse than a bigger engine with a centrifugal blower not tweaked?

Considering price, front to rear weight ratio, and having to repair more often and such.

I have a 67' mustang coupe and want to have a pretty mean street machine, but I don't know which way I should go about it. Any help would be appreciated greatly. Thanks