I dunno what the vibe is. The driveshaft is supposivly balanced with new u-joints. Pinion angle is set. Its not my flywheel, it feels smooth when i rev in neutral.

hmm...so yesterday i go under my car to inspect some things and i find that the u-bolts that hold the u-joint in place are different. Can this cause vibration at high speeds? One weighs a bit more than the other.

Thanks,
Nate