The 99 TA has a strange vibration that, when it occurs , is typically from hard accelerating while turning slightly right (like getting onto a highway). I can't tell exactly where it's coming from. At first I thought it was from the L front wheel...but I can actually feel it under me too. It's related to acceleration. I'll get under it this weekend and check things out. Could it be a torque arm bushing, u-joint and/or transmission mount?