Hello. Question. How do you know what diff you have in the FC? I just picked one up and I’m getting mixed signals for the car. It’s 87 NA with a moon roof. The moon roof screams GXL but not wiper in the back! No power windows. I don’t even know if it had auto dampening suspension. But it’s a 5 lug. This car was for sure tampered with. I just need some help to see if I have that lovely clutch type LSD S4 GXL came with.

thanks a bunch.

 

 

Sunroof with no wiper and 5 lugs can be a sport, sunroof optional on those

 

I'm not entirely sure what type of LSD you have, but an easy way to tell if you have one is on the back of the LSD it should have a metal plate saying Limited Slip Differential gear oil.