What mods do you currently have?
For a pulley you'll want to include a few supporting mods.
CAI
U-bend delete
3" DP wouldn't hurt
You want it to breath as easy as possible, and cool it down a little to help fight KR.
180* stat
1* cooler plugs
A PCM will really help everything works nice together
_________________________
Bobby
Died 5/1/08, resurrected 5/15/08
ASCD SD hood, 17" Bullitts, Overkill PCM, 3.4" Pulley, NGK TR55IX, K&N 9" cone filter, JimmyC D/P, U-bend removed, Flowmaster 40 series, Hooker big bore tips with resonators, S/B brake lines, drilled/slot rotors, GMPP handling kit, KYB struts, F&R strut supports, HID's, LED's, 2.5" Air Dam, red GTP overlays on custom badges, white rear insert.