I can't say for sure without doing research. I noticed the power pack on your loader was in-line and not like a M113 with the transfer case. The M113 transfer case is 1:1 ratio, and serves the purpose of making the power pack square so it will fit in the right front corner of the M113. Having the in-line power pack should make things much simpler for you as far as power swaps. As you know, SAE bellhousings are interchangeable as far as the SAE number, but the flywheel and torus are engine-specific. Basically you will have to find a Cummins flywheel designed for that model Allison. A 6V53 from a M113 might bolt right up however.