I don't know if it would fit but the actual mounts are different for every engine
even some that are the same size but different revision take different mounts. You then need to deal will all the accessories like transmission
and anything attached to the block to make sure it will fit. In any case never recycle mounts. Put new ones on as they should be replaced far more frequently than most everybody commonly thinks. Mounts don't last all that long.
You might try calling Trans Atlantic Diesel
in White Marsh, VA about what fits with what. They specialize in such things. I believe they used to sell a Cummins package that was block compatible and had a trade
in deal too and I know someone that was exceptionally please with the replacement.
a block is nothing compared to what everything else might cost.