How are your motor mounts? I went through 3 or 4 of them with my jgy street clutch. When I put a prothane rear mount in and a solid front mount in the front, I realized my front mount was wooped big time. After I put the mounts in, I have not had a problem since. (Now that I said this I'll be changing it tomorrow when its 25 degrees lol) I came to the conclusion that whenever the car would buck, the motor would pull forward, thus stretching the cable and eventually snapping it.