so the past day or two i have been talking to different transmission shops around my city. i found one that gave be a good price of 1500$ to take the trans out them self, put a shift kit in it, reprogram it and put high performance internals in it. then put it back in. all under warranty. i know alot of people say go for a TEP trans but for the price and the reviews of this company im thinking about going for it. i was wondering if this is a good idea? he had said he did 8-10 of the ls4 trans in the past and have not had any complaints.