hey guys I have an S 5 car , and I think its a GTU . I have a 88 T rear end Im thinking of switching the the rear ends , but how can I tell if the 90 is poss or not. Need help fast we are here working right now

Thanks in advance

Va

 

First.. it would never be a Posi- or Posi traction rear end in a Mazda. Posi-traction rear ends are GM name for a Limited Slip Differential (or LSD here on the board). GM never made a LSD for a Mazda. Calling a Limited Slip Differential a Posi is like calling all refrigerators Kenmores.

2nd A Turbo rear end will be a limited slip rear end, but would require a custom drive shaft and the Turbo Half shafts to work in a non turbo car with a non turbo transmission.

3rd. Unless you have a GTUs (note the small S) model, then you won't have a LSD. The GTUs model will have a tire inflation plate for a 205/55-16 size tire and a aluminum hood, and will not have a factory sunroof.