From 4 channel to 3 channel
If you still have your 4 channel rearend,it'll cost you nothing but time. You have to use the 4 channel axles and backing plates/dust shields into the 3 channel rearend. Both have to be taken apart to the point where the c-clips can be removed and parts swapped.
4 & 3 channels are not interchangeable,different electronics and brake hydraulics.






