Hey, I know this is slightly off from what you want to do with your truck but as far as some cheap but effective performance upgrades I'd recommend the:
ISR/Airaid MIT mod
New weld on high flow muffler mod
I did all of this for around $250 and man was it worth it. (The first two mods are modifying the intake system to be less restrictive and therefore have better airflow into your throttle body giving you an increase in HP's and throttle response. The high fow muffler will do the same but just on the exhaust side obviously.)
No Obstacles, Only Challenges.
My Rig: 3.4L '00 Tacoma with Deckplate, Truflow airfilter, Airaid MIT, 4x9x18 Magnaflow weld-on muffler (11245-center/center) w/turn-down pipe. 15 x 8" Ion Alloy 133 Wheels w/33x10.50 BFG A/T's. Toytec front CO's w/ adju Bils 5100, OME Drakar's w/Bils 5125 Front 2 windows tinted to 25% to match rears. G1 HID Projector Headlight Conversion. Coming soon: an oil change ;-)