Got the wheels and tires picked out and hopefully be getting them and the posi and 4.10s in the next few months.

The wheels a American Racing Torq Thrust 2 with the Grey spokes, 18x10in, 5.74in backspacing.

The tires I am going to try out are Nitto NT05 measuring 295/45-18
http://www.littleshopmfg.com/gm-88-0...r-disc-brakes/
Found a website that has a rear disc brake swap for the truck for a reasonable price.