About to do a clutch swap and noticed a metal tag on the t5 with the part# m-7003-z on it. The car's an '87 gt. When I bought the car I do remember the tranny looking new because it was spotless and the motor was filthy. According to ford racing that t5 already has a steal bearing retainer on it. That was one of the parts I was going to replace if it was an aluminum one. Does anyone know anything about these transmissions?