endyn makes a stepper pulley...adds 3more psi and a crv crank pulley will add 2-3 psi, then you could always change out the nose pulley.
what sucks is this sc is limited to 12psi.
i have the endyn stepper wich should raise me to 9.5-10psi along with the uberdata tune next month.
i also have a p&p head, dc header (it is shit by the way), 2.5" cat back with high flow cat. i now have a 3" intake, unorthodox ps pulley, stage3 clutchmaster with a 12.5 lbs flywheel, 255lph fuel pump, block guard, raxle axles, tokico shocks and springs, energy suspension motor mount inserts, msd ignition, couple of little things i forget.
i did get it dyno'ed... on a slipping clutch, and a bad blower that was leaking oil, 5psi
166whp and 141wtq. that head helped a lot.