Alright I have the chance to pick up some axles off of an older Dodge 4x4 1/2 ton. The problem is I can't tell for sure what kind they are for sure. They are distinctly Dana axles but the truck is an old National Guard truck and doesn't have normal factory options so I can't go by tecnical records from Dodge for that given year model. All I know is it has dana axles front and rear with 5 lug hubs and is supposedly "heavier duty" for that particular truck than what was normally offered. Is there any easy way to tell the difference between the 44-60 etc without cracking the diff cover off? Also just how much difference is there between a Dodge Dana and a Chevy Dana? These axles are going to be almost free so I'm just wondering if they would make a decent "back up" set for when my stock 10 bolts go out.