What all do I need

Contact Dr Diff. He will answer any questions you have about 8.75s.
Cass is his name. I purchased axles from him a couple months ago for $300 - green bearings already installed and 3" wheel studs. He's a great guy to deal with.

www.doctordiff.com

Do this ^

Buy 2 of those $117 axles and pay another 70 for bearings, then have to press them on and you are over the $300 range anyways.

You wont' find a nicer guy to deal with than Cass. His A body 8.75 axles are the right length too. He's on ebay too.

http://www.ebay.com/itm/Mopar-8-75-...r_Truck_Parts_Accessories&hash=item2a1fbd87a6