stand alone suspension? as in you don't have to hold them, don't they always stand alone...
also if you are doing a hEaton with a custom manifold why not look into different blowers? whipple i may suggest..
so much more effecient and they thrive on high boost, think 18-25psi....
also please no matter what blower you use, try to integrate a w2a intercooler before you resort to meth injection..
also look into e85 tuning, race gas for pump gas price