Heres basically the 2 configurations without getting way more creative
Option 1 - mounts hun inside of frame as I think intended/designed for clearance of exhaust underneath. Almost 0 clearance to mount a trans mount. Could only think to get ike a 1/4" real thick rubber matt cut to square to match the mount pad on the xmember.
option 2 - hung off below the rails. Gives too much vertical but maybe could be bridged with a spacer on bolt. probably means exhuast may have to go over TOP of xmember.