Thanks for all the info. I'm going to leave the 07 stock. It'll be fun to compare the 03 to the new one.when my wife let's me drive it.

Hmm, mods to brackets, ECU changes...not as simple as i was hoping. Don't know if i want to mess too much with an 07. if i didnt have 200,000k on the 03 i'd sc it with the factory unit.

we love our 03 vibe so much we're going to get a 2nd one. A new 07. i want to have the gm supercharger installed prior to pick up. my question is that the performance catalogue lists the kit for 03-04 only.Will this kit work/fit on an 07? I work for the dealer and we're having a tough time figuring ...