2004 Holiday Rambler Endeavor DP.

I took my rv in to a repair shop that does rv's and large trucks. they checked out the front end and brakes. The brakes are glazed over and that is the cause of the growl when applying when backing up. The tie rod ends are worn as well as both king pins and bushings. the shop manager took me down in the pit to see. I have done a lot of auto repair many years ago and know what I am looking for and he was correct. Its in the shop being repaired so I am anxious to see what kind of improvements that will make. I took DSDP Dons advice and read Sway article on another site and It was very informing. I called Source Engineering and Talked with Jim and he was very knowledgeable about my problem. He is recommending to purchase and install his sway bar kit including the precision tuned gas shocks that are part of the kit. Kit sells for $3300.00 Thanks for all the input above . Has anyone used this kit before? Kit #REK-281.