You have to remember that the 05 supercharger is a more efficient blower than the earlier years so according to zzp a VS cam, or SS intercooler is also required with a 3.4" pulley.
I have a 3.5" pulley in a 98 gtp with a cold air intake and stock exhaust. I have headers, just need to mod them some before installing. I got the hp pro tuner software, started with a cross between 98 and 04 timing tables (should have just started with 04 timing table) and daily drove it for a few weeks, adjusting the timing daily to reduce knock to 0
