Source of 833 Transmission Mount?

What's the best source for a rubber 833 gearbox mount, similar to the OEM?
I looked at Brewers and Passon, but saw only polyurethane. To minimize NVH, I have always preferred rubber.
PS - the mount has two holes on the gearbox (upper) side for bolts to pass through, and two studs (pointing downwards) that would pass through the crossmember. Some of the pics I saw online showed mounts with only one stud; no bueno.

273 V8 with a manual. Converting from 3 to 4 speed.