Im super chuffed she lives again...
The pipe that I put on was fairly sedate, based on the fact that I used her as a daily drive, if you have an E34 M5 exhuast, and it fits without an issue, then change it, I would.
Yehp, the clutch shudder is an issue, still one of the things that I needed to do, see what happens when you rebond a clutch and dont skim the flywheel....