very little aftermarket performance stuff for the Buick 350. there is an alum intake, look up www.TAPerformance.com
have a reputable head man do your porting. NA Buick 350's have gone over 600 hp and a Turbo has been over 1000hp.
aftermarket pistons can be ordered or built for anything. the question is how much you want to pay.
The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation.
Government schooling is about "the perfect organization of the hive."
H.H. Goddard, Human Efficiency (1920)