right now im running a suber b special but want a new turbo.i was looking at a phatshaft 66.i have a #0 plate slid all the way forward, 4k gov springs, 150# valve springs,stage 3 cam, stage 2 cold air intake,191 delivery valves,150hp injectors, 3 pice manifold, intake manifold, fass system,head studs, fire ringed,4in exhaust to dual 5in stacks.the pump is turned up and 18* timing.i think thats all.so i need some inputs

 

I would look at a set of compound turbos.

Luke

 

I was looking to run a single

 

Not sure your going to see a big difference. The Phat Shaft 66 has a smaller exhaust wheel then the BD Special.

Luke