Originally Posted by zakeswrx
you can try and contact flat4innovations or andrewtech someone who deals with subie drive trains, or you can order a stock set and send them out to cryo tech or any place that does rem isf metal treating.
We already contacted them. We have decided to just order a new stock rear diff for the car for now. We have also ordered a new rear diff ring & pinion and we are going to manufacture our own since we have access to the machines needed anyways. It's just going to take some time.