I've got a low mileage 02 D2 with a vibration issue I've yet to resolve. It comes in between 60 and 70 (strongest around 65) and diminishes greatly above 70. I've swapped out the front driveshaft for 2 other good ones, swapped out the rear driveshaft for a good D1, installed 3 sets of tires including a brand new set that has been balanced twice. The vibration persist. The 4.6 (P38 V8) has a worn cam lobe but I don't believe it could cause this issue. I haven't checked the rear mounts yet but the front ones were fine when I installed the engine a couple of months ago. Any ideas before I start throwing any more time and money at it?