Just wondering if the 240mm clutch from a 5000TQ will fit a stock 1986 4000S Quattro. Mainly I'm wondering if I'll need to do any flywheel modifications to to accept the larger disc and preasure plate. I'm planning to do a turbo conversion some time in the future, but the car needs a new clutch now. (It slips when shifting from 1st to 2nd at high RPM).