Expansion goes towards the front per shaftmasters. I double checked with them when I did mine. The bozo's at the dealership put it in backwards when they did my clutch TSB, ran it that way for 50-60 miles before I saw they did it. Seemed to run fine that way, I only caught it cuz I double-checked their work.
07 GT Vert. Triple Black. Steeda CAI, FRPP GTA's, Roush Styling Bar, tuned by Brenspeed.