so wait let me get this straigth I need the base SH tranny I cant use the one that came with the 2000 SH that I bought. Also on top of that I need the 96 P13 Ecu and i cant use the one I have cause of the immobilizer. Now does that have anything to do with this ATTS that I am reading up about. Is that something that is going to srew me in the long run. Once again I appreciate all the help guys. I just dont want to regret getting this 2000 H22a4 since it so pristine you know.