With the car standing still, when I put the transmission into 1st gear I get a thunk sound. Also when I shift into 2nd, I get the thunk sound also. In both instances the clutch is pushed in. If I'm extremely easy on the shift it doesn't happen. Does this seem like a transmission issue or an IRS issue? When I replaced the rear brakes, I saw bits of rubber missing from the upper control arms. The bushings around the IRS looked ok. From my research, the bushings around the IRS suck. What are peoples experience with this. I bought the car without ever seeing it run because the engine needed rebuilding. Now, I'm sorting out all the other issues.