My suggestion for a new product idea would be to build a custom bellhousing for the Allison A1000 transmission that would fit on the back of a AMC block.

Allison bellhousing are a bolt on part and in integral as in conventional automatic transmissions

This bellhousing would also need to accept the standard Ford style starter found on AMC engines

The next thing would be to offer a turn key kit, with the bellhousing, flexplate modified to fit a the torque converter, stand alone computer,
new or modified rear crossmember and all the instructions.

While this may not be a cheap project for a FSJ Jeep owner, I think there would be enough buyers to a least think about.

Next product line would be for IH Scouts.
I'm sure they would love a kit like this as well!