I built a three wheeler out of a Moto guzzi front frame and married it to a 2002 Kodiak 4x4.it works really well off road, but you can imagine how it works on rd , hard to steer. Does anyone know of a rear diff which would work like the front diff, ( limited slip) I believe I could use the front suspension and diff but would have to change rotation somehow any ideas?

 

Some diffs you can simply turn upside down to get them to work backwards. The breather is a problem as is getting the right oil level. Some bikes have prop shafts going round the opposite way to others, which side of the crownwheel the pinion sits is a clue, so a front diff from another bike, with the pinion on the opposite side to your front diff, should work.