[blackdemon]

well, I didn't have a problem with my warranty on my Celica a few years ago, it was lowered, with 17's, CAI, and cat back exhaust. I asked about the mods, and the service rep. advised me that the if my engine blew, they actually had to thouroughly inspect, and prove that the mods on the vehicle were the cause of the engine failure. Then again, as mentioned above, I would suggest a complete afternoon, and a magnifying glass and read the fine print in the warranty contract, and brochures. Worst case scenario, with simple mods, you can return they to stock before going in to the service center. Have fun with ur truck.