Motor/ mid plate suggestions for r3block and Reid case power glide

Does anyone have a preference/ suggestions on type motor/ mid plate for abody r3 block and a Reid case power glide.it has the Mopar bell. new territory for me. car has a RMS altercation front and no motor mounts on BLK or kframe. I have a new motor plate. a few pictures of some abodies with out the engine in and mid plate installed would help me get my head around installing this beast of a motor