i was going to post this.. but not having actually ased a banks kit i figured that nobody likes a gut who id onlt negative...
i did a setup on a 31 ford a year back.. and i bought cast logs from Schwartz racing, they are simmilar to the banks ones... but cost 1500 USD for a pair... the engine makes insane torque and power... havent dynoed it yet but a fair guess is 800 Rwhp at 18 pounds... we get 98 octane over here..
i think the whole turbo build came to 5 grand with all the little stuff, but that is less engine..
and if you are looking for a complete turbo engine with everything... you can get a 350 Nelson engine for 26K...
the below build will run you at way less... so dont give up on turbos just yet