I have a late 2001 mustang gt. When I bought the car it had a T-45 transmission already in it. I'm assuming that one of the previous owners blew up the 3650 and this is what they got from the junkyard. It got me curious if they may have blown up the motor as well. Is there a way to tell if I have the original motor? The 8th digit of my Vin is an X. Does that mean it is supposed to have a Windsor motor? Because it definitely has a romeo in it.