This is an eBay find. Got it for 150 bucks but had to drive from here in perry county Arkansas to Ponca city Oklahoma and back yesterday to get it. It’s a Dana 61, just like a 60 but with 3.07 or 3.38 ratio, this one is 3.07. They had to use a really large pinion gear to get that low number ratio so it’s located farther over in the housing than it would be in 60. They were used in Dodge and fords when they first came out with diesels in the late 80s early 90s. Neither make had overdrive transmissions yet making these ratios necessary so as not to over rev the engine. This is 65” from WMS to WMS. Darn near perfect to replace an original that was 62-5/8, it would even work on a pickup with original fenders. Original or the later Chevy stepvan 19.5 dual wheels will clear the brake drums. I’m thinking this particular axle came from a ford, my Chevy wheels won’t go over the hub but ford wheels will. It won’t be a big deal to get the wheel center hole turned out to fit it. If anyone knows of a way I can figure out exactly what it came from please let me know as I now have two 1 tons and this looks to be a cheap easy way to make one drivable on the interstate and it would make it easier to find another one.