If you pay the extra $200 for the warranty. Magnuson will give you a 36,000 mile power train and take over the GM warranty(P.T. ONLY).To keep it, only mods are Catback and a TB. Anything else they say voids it! No headers, etc. You also have to have a Magnuson aproved installer do the install.
I did the warranty on mine but I'm not looking to make mine a rocket!:biggrin2: Just over 400 to the wheels!:coolthumb:
If you do buy one get it from Joe, Leftcoast. His service is onreal! Dealing with Magnuson people can suck!