the 4 lug cars only appeared in 86-88, and thats just for the bases. the upper models, sport, gxl, turbo all had the 5 lug setup. then all the 89-91's have 5 lugs too.



swapping the front is easy, you simply exchange rotor, wheel hubs and calipers.



rear is the same except the rear hubs are pressed on

 

Wow, i just looked at the pictrues i had of the car... thanks for correcting me!!

 

You should swap the brake booster and proportioning valves aswell, they were different when we did my swap.

 

Is there a difference in axles with 4 and 5 lugs, LSD or not?



And what exactly do you need for 4 piston swap, I have a S4 GXL booster and SS brake lines anything else?