Well is has been a while since I posted anything, a little history, we own a 2007 Holiday Rambler Neptune (RR4R chassie) towing a 2007 Jeep liberty behind, from this web page I found all the information to make good financial decision about repelacing the trailing arms. I also decided to replace the air bags and shocks per recommendations from Source Engineering.
We just finished a 5000 mile trip from Il. to Southen Cal and then south to San Diegio and over the monitans to Casa Grande Az, for remainder of our stay. I want to comment that with all the changes we made the ride improvement was 60 to 75% better then stock, we only lost clothes once and I not sure what unit would have withstood the bonuce we hit. I am very pleased with the result, and ride enhancement kit improve our ability to drive longer days with less faguite.