I'm kinda sure this will work but want to confirm before I open things up and drain my gear oil. I was cleaning up in my garage this weekend and saw my old 4.10 diff sitting there on a shelf. It's from my 93 4wd pickup. Hoping I can swap it in place of my 75 pickups 4.37 diff so I can drop my RPMs a little bit. I know the housing will physically bolt up, but was unsure of 2wd vs 4wd axles sliding into the differential carrier. I haven't looked up specs of axle spline counts etc yet, unfortunately everyone's lists start with the 79 pickups. So...Will it work?