I run sumo springs front and back, and Bilsteins on my Chevy 4500 class C MH definitely helped with ride height, swaying, and excessive bouncing. If they had reasonably priced air bags for it installing without drilling in the frame probably would have went that route without a combiner valve instead.I really like timberen I think they are called SES, I had those after having airbags and they are way better, you dont need to add air or balance them out, you dont feel them when you are not loaded. and they are less expensive. a no brainer in my opinion.