2plus2

i want to start gathering parts for my motor build but i wont even start if i cannot find enough traction. first off im building a 67 pontiac 2+2 with a turbocharged, 700+ rwhp SBC. anyways the car weighs like 4000+lbs and i am limited to 8.5 to 9 inch tires in the rear. will buying a bottom end and a turbo be a waste of money since ill never hook up? or will i have a chance? my goal is mid 11s with street legal tires.