The GM corporate 14 bolt full float rear axle is cheap and available in junk yards. There are not as many gear sets as are available for a Dana 60, but those are more expensive. Disk brake kits are available. Standard bolt patterns are available. Lockers are cheap.
If you want to haul anything with your truck, then this axle will handle more than your frame will. Most people consider this a bullet proof axle... it just weighs a lot.
