As some of you know I was building my car over the past couple of months. I ordered an OBX LSD for my car since people have had very good luck with them from Sparktec Motorsports. I recieved it fairly quickly and had no complaints until I got my stock diff and the OBX one side by side. The OBX was nowhere near being dimensionally similar to the original. I contacted Danny at sparktec and he has given me a return shipping label and an RMA form that i have filled out and I sent the part on it's way. I tracked the part and knew when it got there, so I was expecting my refund. Once I saww no refund I emailed him again and he said it will be refunded "in a day or so", and it has now been a month since that was said. PayPal has refused to dispute this transaction because they apparently don't dispute cases like this. One of our members was nice enough to drive by the place I sent the diff back to and it appears abandoned now... DON'T BUY FROM SPARKTEC MOTORSPORTS, they are scammers and liars.