It wouldn't be that hard to do, I don't think. But probably would require some experience in making sure the shimming was correct. To be fair, I've not put one in the MTX75 myself, so I'm not 100% sure. But with other Ford transaxles I've had apart that were of that basic configuration, it was simply a matter of removing the bellhousing half of the transaxle case and then lifting the diff out. No further disassembly was required. IIRC, from what I understand, the MTX-75 shouldn't be much different. Can anyone varify that?