Sounds like it might be the EGR solenoid in the vacuum box (do you have the vacuum box?).
There are many YouTube videos on motor mounts that can explain this better than me. Check them put. Good luck.Thanks for the replies!
Also, thanks for the heads up on the motor mounts... I have noticed the engine buck back just a tad when revving, is this normal? By a tad, I mean a couple degrees between idle and 1500 rpm.
Any easy ways to test the mounts without removing them?