I really appreciate all the forums you guys have. I have had many datsuns throughout the years( mostly trucks ) I got my z car in a trade and I love it!!!!! When I got the car it has a vibration at 2-3000 rpm, the guy told me it was the clutch (which slips a little bit), but someone else told me it could be a mount for the tranny what do you guys think???? P.S. Thank you datzenmike for telling me about this forum!!!!!!