Well I am wondering if anyone can nail this down for me? Does the transmission (4T65E) from a 2002 Monte Carlo have a different valve body than a transmission (4T65E-HD) from a 2004 Monte Carlo Supercharged? This is been argued over on ClubGP but I am wondering if TEP or anyone else who specializes in transmissions can answer this for me? Now keep in mind this is not the same as a Grand Prix where in 2004 they got a new body style and IRC a different transmission.