I recently have done some upgrades to my 2002 Supercrew XLT:

K&N II FIPK
Gibson Super Truck Exhaust
Hypertech Power Programmer III
22" Tezzen Decco Wheels
305/45/22 Toyo Proxes Tires
Westin Nerf Bars
A.R.E. Fiberglass Tonneau Cover

I've ordered the Street Scene Bumper Kit and new Grill Shell with Honeycomb chrome inserts, which I'm waiting on any day now.

I'm in the process of upgrading the suspension (I'd like to drop the front 1" and the rear 2") If anyone has any suggestions on which manufacturer has been good for them, please reply....

As far as the performance parts go, I've noticed a considerably faster truck since the installation of the intake, exhaust, and power tuner. You have to make sure to set the programming to 93 Octane and firm up the shift points. They are some other options on the tuner that I haven't messed with yet that will supposedly increase the trucks power.

I recommend 3 easy upgrades in you want to noticeably increased HP.....intake, exhaust, and power tuner.

Mike