Hi there i was hoping that someone could give me some advice on this. I have got a 1994 wrx which came with a 4.111 setup, i have decided to go with a box and diff from a p1. The rear diff has LSD and just wanted to make sure i have done everything right before i get all sorts of problems. I have used the shafts, prob and rear diff mounting bolts. I did read somewhere that the mounting bolt need to be used which came with the LSD diff is this correct as they are quite abit longer. Hope someone can offer some advice on this.

 

Does anyone no

 

Are you talking about the two studs on the rear of the diff? There are two types of rear diff carrier, one type was fitted to some very early cars but if the studs are still on the P1 diff everything should be a straight swap.