Run a modified 48-54 truck bellhousing. It will bolt to your enfine and the crossmember just like the original, and will also bolt up to the m22. Buffalo Steve and Jim Carter sell them with the brake and clutch pedal mounts just like original.
Just out of curiosity what gears and tires will you be running?
I have a 40 jimmy that will be running a nv4500 behind a 302 jimmy 6. 4.11 gears and 30 inch tall tires.