Yep, my '95 GL is getting a bit long in the tooth, but it started the vibration stuff back at about 60K.
I installed about everything associated or touching the timing belt as well as new plugs, plug wires, a coil pack and everything else a tuneup would require and it runs great, BUT....
IT STILL VIBRATES LIKE MAD!
It passed the Texas Emmissions Test with flying colors right after I did all this work, so it isn't a engine performance matter really.
It has to be the motor mounts.
I did take the mount off on the timing belt side (in fact I did it just this morning) and it didn't seem to change anything.
I'm just too lazy to replace all four mounts I guess!
I basically keep the car to drive to the airport and park over the weekend each week.
DB