coming from a past procharged 05 v6 owner... with you have plans for anything to go over 400ish rwhp/400 rwtq .. you should invest in a 8.8 vs 7.5 w gears and lsd....
most guys have blown them around that power...
http://www.mustangcollective.com
go here for info incase you havent heard about it.. yet
I blew my motor with a procharger 13psi and a 50 wet shot..
I have a forged SSM motor, with a powerhouse turbo, and zex ... turbo was bought through PMP( if you mean piedmont modular performance in nc)i can run around 13 psi but if i go much higher im liable to blow the rear out like every one else has..
NOt saying you cant beat on it..
but dont go to crazy with a 5 spd and dr at the track....
also..
if you upgraded the intercooler you shoulda upgraded to a D-1sc ... your P1sc will be maxed out at 15 psi.. and the smallest pulley you can go 3.0 .. after that you gotta get custom pulleys done ....