proper engine mounts

I'm trying to find what motor mounts came with my 67 b body belvedere slant six
what is on there now are (2) 2806476 , em2277
when i look it up the mount that is shown is not the proper one (summit)
and the engine in the hole with the mounts on the crossmember the tranny is pointing toward the rear left wheel i have to force it over , so the engine mounts are under stress.
any body have a clue??