Ok, I just bought a 92 YJ with a 4.0 5speed, 2 1/2" lift, and 31" m/t baja claw radials. When you take off in 1st gear, there is a bad vibration in the drivetrain somewhere. It also does it half way through 2nd. After you get up to speed it stops. It also does it when you accelerate hard. Going...