Hoping for a little too much. The UDP's will give you about 5 to the wheels and if you are going to an aftermarket tune from the stock one you should pick up 15 or so. But the gears will actually lower your peak HP. They make it WAY more fun to drive, but doesn't look as good on a dyno. Good choice on the gears.
In the market for a Fox body...
SOLD: 2007 Performance white GT Premium.
Performance: Eibach lowering kit, SVT wheels, Steeda Camber Casters, Steeda short throw, FRPP 4.10's, Airraid CAI, BBK 62mm TB, Brenspeed Detroit Rockers, Pypes Longtubes with O/R H and Violators.
For fun: Window louvers, 15% tint, Raxiom tinted taillights, J&L Audio sub.