Just wondering if someone would educate me. Are there any rear axles that are factory 35 spline? Ford 10.25? Dana 70? Also which of these were factry disk? I believe the Ford was but what years? TIA

The D70 and 10.25 are both 1 1/2" 35 spline axles. Not sure on the disk part but I do know that the Ford Super Duty's have disks. I beleive the Super Duty's have 10.5 axles in the back, not sure what the difference is between the 10.5 and 10.25 other than the ring gear diameter.

some D70's were 1.5" 35 spline
my 90s dodge one was 32 spline, changed it to 35 when i did gears n locker

some D70's were 1.5" 35 spline

I forgot that some of the newer D70's werent 35 spline

They are rare, but early '70s Dana 60HD full floaters came from the factory with 1.5", 35-spline axles. Also some semi-floating Dana 60s used in Ford vans had the 1.5", 35-spline axles.