A little help... I was wondering if someone could give me some info on what axles are used on the new GM HD pickups. 14 bolts? Dana 70 or 80's? I would like to use a Dana axle for the rear of my 83' 1 ton. I have an ARB for the front and would like to match up the rear. Can you use the disks in the rear for the older pickups? Has this been done? Any help would be appreciated. Also; I am in the market for bumpers front and rear, but havent been able to find any that I like. I love Bullet Proof mfg's bumpers(http://www.bulletproofmfg.com), but as of yet they do not make any for fullsize rigs. I would like one exactly like their front bumper for Cherokees(FF3LWGH). Anyone make/sell/fabricate anything like this for a fullsize chevy? Sorry for the long post. Thanks in advance 83' K30 4x4 Reg Cab LB 500ci Caddy/NV4500/ORD Doubler/Dana 60 Front Rear?