Installed the Hellwig 7707 rear sway bar it's noticeably bigger, I will say this the instructions Hellwig included are ALMOST completely useless but they do have a couple pictures to be sure your putting it on the right way, I put her up on ramps because the rear sway bar is done while the vehicle is on the ground, it is easily a one man job no help is needed, the hardest part was assembling the end links/bushings, the bolts included with the sway bar are all completely different size than the factory ones except one. entire r&r took me about 2 hours but atleast I got it on right the first time, no surprises, better instructions would help a LOT hint hint if your reading this santa rosa. also ended up with extra bolts, nuts and washers that DO NOT APPLY.
I ran her up and down the street a few times and the ass does feel tighter, I still have the front bar to install I think I will notice a bigger difference once it is on but there is a big storm headed my way this weekend might not get to do it this weekend