t-5 identification woes

[thdrcat]

i have an 87 gt 5.0. i am doing a transmission rebuilt after my second gear syncro has failed.

i am to the point where i need to know the number for the transmission so i get the right rebuild kit. the metal tag that should be on my t-5 is gone. I found a number on the main and tail case. when i ran those numbers i got that it was from a "Ford 1984 Mustang/Capri 5.0 V8"

T-5 Transmission ID'er

tail housing: 13-52-066-939
main housing: 13-52-065-921

i will be SERIUOSLY pissed if that it true... correct me if not, but if that is true, i have a non WC t-5. any help with ID? i cen get you pictures if you would like.