I'm wondering what yr and models came with Dana 60/70/80 that are a direct swap into my truck. 98.5 2500. I have RWABS only. My goal is to find a wrecked ram that has 4.10 ratio, and just take the axles off of it instead of going through a shop to regear my truck. Did gassers come with the same axles? And what years. Can I tell axle ratio by looking at the vin? Or do I need to call dealer? Thanks