You might as well just keep the motor stock if your only going 12-14lbs.

 

+1 stock D should handle 14psi on a decent turbo with a good tune

 

it will last for a little while at least.

you can only get so much from a 150k motor.


if all else fails, rebuild it with stock internals.

 

rod goes on with magic and our surface grinder does not have coolant hooked up....so we only rarely use it to grind tools-but seriously ill post pics tommorow of how my dad put it on the lathe i would not have thought of that -----reverse collet concept, tappered bolt goes in the threads of the fixture to ------ to od whichs tightens up onto the rod id