I tried to post this in a previous thread on trans isolators that Adam112 created, but it had been locked. Transmission Isolators - Gauging Interest
While looking for a bolt on Rock Auto I ran across these under “transmission mount”. There were two brands actually. These were $22 for qty. 2 shipped to my door in a few days.
I'm noticing a little jolt when I release the clutch, most noticeable in the 1-2 and 2-3 shift... or if I release the clutch quickly. I haven't been under the car yet to figure out what's going on but I'll install these when they come in.