Well this is for my Camaro and was woundering if your suspension set-up is the same as the third gen Z28's. Anyways there is a torque are that goes from the tranny to the bottom of the rear end and when it goes to the tranny there is rubber between the torque arm to the bracket then it bolts to the tranny. I changed less than 2 years ago and seems like its busted again so when the tranny shifts there is a thunk sound only from first to second. Its a bitch to change it because the tranny has to drop down a bit to replace the TA bracket