Vibration when shifting into drive

Hi-
I am getting a lot of vibration when I shift from park into drive. If I put it back in park, the vibration goes away. I'm thinking several possibilities:

Engine mounts
U-joints
driveshaft.

Mine is a 95, 2WD model. No unusual sounds or anything, it does it when the car is sitting still, so it can't really be suspension parts, or alignment issues, etc..

Anyone else have this problem?

A lot of times something brakes loose on the exast system, and vibrates at the lower rpm in gear. contributing factors can be a high static idle when out of gear your idle sholdnt be more than 650 in park.

if you wish to check the motor mounts, lift the hood and start the car, ensure noone is behind or in front of the vihicle apply the foot brake firmly with your left foot, in drive or reverse the engine should lift no more than an inch when the throttle is applied.

no more time to write.