Look at the M.O.R.E. motor mounts or the A.A. mounts:
Advance Adapters 713007 - Advance Adapters Jeep Engine Swap Motor Mounts - Overview - SummitRacing.com
You want a bellhousing
, not an engine to trany adapter.
Figure out what flywheel you have or are going to use. If you run the 153 tooth you can get by with an Iron Duke bellhousing for $25 - $50.
The 168 tooth flywheel requires you to run a full size GM bell but they all have an oversize bearing cap hole. $50 - $100
OR, ... you can run the Lakewood or A.A. bell $350 - $450.