Good call... I looked his whole write up... it makes total sense... I have the 98 SVT EEC... I need the 89.5-99SVT computer... I am very unsure about a 00 because it has a returnless fuel system... so I'll stick with one of the few 99 SVT computer codes. I guess that answers my question. Thank you so much you guys, big help. I'll let you know how it goes!