I've heard the P&Ps dont like bigger injectors, and standard ones will fuel it fine so you wont need to get uprated ones. Buy a RRFPR, 255 fuel pump, EBC, FMIC, wideband and an good exhaust manifold, front mounted air filter turn the boost up to a bar and enjoy 200+ bhp with rapid spool. Should also upgrade the cooling, ie thick rad, and a few oil gauges to keep an eye on things