I picked up a 2004 Chevy Express 2500 rolling chassis. It has a 12 bolt rear end. I need to figure out what kind of rear end this is. It is 8 lug and i need to find out what it would take to convert it to 6 lug and use it in a 03 rcsb, and how much power it will be able to handle.

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ImageShack® - Online Photo and Video Hosting

Any help would be awesome!