Thank you Longhorn 70 for posting that picture of an Eaton rear axle. I don't have any that are still bolted under a truck!
Just for reference, I am posting a picture of a Dana 60 from under a 67-72 GM truck. Notice the square part of the cover. This would be how you would differentiate the Dana 60 from the Dana 44. Other manufacturers used 5 Lug Dana 60 semi floating axles under half-ton trucks and SUV's. And I am only referring to back-in-the-day vehicles, not modern ones.
Dana 60
Here are some pictures of a 14 bolt Full float 10.5"
14 Bolt
Anyone have a picture of a stock diff covered 14 bolt? I don't have a straight on one.
SS Tim, you bring up a good point about track width, I didn't even think about that with his new front end! I want to say the TW on the Eatons I have measured have been 67". I will have to double check my notes tonight.