i took my 86 dodge 4x4 318 to the garage to see if they could help me out. i have replaced the rear ujoints, check both my yoke nuts, took the front drive shaft out( because they dint have the joint to fit it) and it still vibrates. now, they checked the drivesahfts and they arent bent or lost wghts, replaced the vacum lines to the transfer and the cad. checked my torque and all the mounts. they said everything was o.k. and the problem was in the motor. the motor runs smooth, at idle it dont jerk around or rock. even when you rev it up it sounds good. what could it be? sunday i plan to check the balancer and the flex p[late. the guy at the shop said he really didnt know what it could be, but it needed a motor. and my steering box is shot which i already knew. how much would one cost from a jy? and he says one off of a chevy would fit form certain models. i would greatly apreciate your help guys, it aint looking good for the big dodge.