I am in the process of a frame of resto on my 71 -40. Just took my front axle apart for a mini truck disk brake conversion and the ring and spider gears are pretty badly rusted. I do have a 77 part truck and was wandering if I could use the 3rd member from the rear end in the front end of my 71. I was wanting to keep the disk brake front end of the 77 whole because I am planning on selling it. Will take $200 if anybody is interested!! I had already bought all the mini truck stuff before I found the 77 part truck.