So, to give a 30 second wrap up. I have a 02 4 door GTP. A tree fell on it caved the roof in, the body shop put a new roof skin on it along with sunroof assembly headliner and shade. Can anyone tell me what year grand prixs had the 2 piece shade? Orignally the shop put a sunroof assembly out of a 99..i know this because i saw the barcode with date on the track it came with a 2 piece. that shade was broke so they found a 1 piece back in it. unfortunetly they broke all the tension clips on the side so it kept hanging up. im thinking the 1 piece shade does not work with the sunroof track for the 2 piece..if they are any different.