I run hellwig sway bars from summitracing and they were inexpensive and are great. I will not buy another truck without first putting a sway bar on the rear. The difference between hellwig and hotchkis are that hellwig are solid bars and hotchkis is hollow. But for the price and the benefit i would go with hellwig. I noticed a huge difference when i put the rear sway bar on. But when i replaced the front not so much. One cool thing that the rear sway bar does is that is levels out the back end. As most of you have seen is that the older our trucks get the more is wants to lean to one side as the suspension on the left starts to sag. Last time i checked you can get a set of hellwigs for about $400. I love my rear sway bar because i like to take turns FAST.
I can take a 90 degree turn at 45mph with very little to no body roll on my set up.
2004 EXC Silverado 6.2L
Mods:
6.2L L92, Ported and Polished stage 3 heads, 95mm Throttle Body, 100mm MAF, NA, Pacesetter LT Headers, Magnaflow X-Pipe Muffler, Electric Fans, 160* thermostat, 2" Drop Shackles, Hellwig Sway Bars Front and Rear, Monroe Reflex Shocks, NGK Spark Plugs, AMW Oil Catch Can, 17"x10" wheels on Kuhmo Tires.