`49 Plymouth, stock 218   Sorry for the length but I'm trying to address some questions up front.   New clutch, PP, release bearing, pilot bushing, engine mounts (F&R).  Flywheel looked good and flat - checked with machinist's straight-edge, so I didn't have it re-surfaced.  Upon initial start up noticed quite a bit of vibration upon clutch take-up.  Made a trip around the block, which only served to confirm what I'd already noticed.   Pulled everything back out