These urethane insulators from Energy Suspension will hold your engine more securely than the rubber mounts. You'll notice significantly less startup shake and less engine vibration transmitted through the frame while driving. I installed these in the '32 after 40,000 miles, and I won't install the rubber insulators again. I'll use these on future projects as well.

Energy Suspension does want the preload plate used.

Price is for one pair. Frame plate in picture not included.