I have installed the equa flex on my unit and I also installed upgraded shackles with wet bolts. I no longer pop and creak with every movement which is nice when pulling into a campground late. I do believe that it provides a better ride as I find less items mainly dishes moved around after a long pull.
To install it is a little tricky. I needed three jacks total- two for the frame and one to put the axle back into position. I did use the brass bushings over the never fail type- price I felt was too high.
2014 Evo 2850 "Woodstock"
2011 Toyota Tundra "Clifford"
2014 Stealth Evo 2850- "Woodstock"
2011 Toyota Tundra Rock Crawler TRD 5.7- "Clifford"
2013 Honda Accord Coupe V6 w/Track Pack- "Julia"
Just glad to get away