Ok, so here's what Ive done.

RK 3 - Link Front Rear Long Arm suspension.

Regeared to 4.56 gears

Adjusted the parking break

installed all new axles. Front and rear Yukon Chromoly axles.

The problem now -

My traction control and ABS lights are popping when i drive above 60 mph.

The course of action -

I think the alignment is off. When i turn the wheel i hear a thud somewhere in the nose of the truck, not all the time, just when its stopped. I used to think it was the coil over puck moving up and down on the shock. Im bringing the truck in for an alignment tomorrow. Ill have them tighten all the drag link suspension and do a 4 tire alignment.

with everything straightened out and bolted down tight, we will see weather or not my problem is solved.