I installed the Roadmaster P/N 1139-144 1-3/4" auxiliary sway bar. Well worth the money , while the track bars helped with the rear sway I stll had some because of the over hang rear of the drive axle I wanted to get rid of. With the addition of the auxiliary bar the MH handles much better, no sway on roads with a lot of turns. Haven't driven it in any real strong side winds yet, the winds I have don't even notice them. Bought mine at etrailer.com they don't show it on the web site unless you do a serach for the P/N. When I ordered mine Roadmaster was out of stock for three weeks, etrailer deliveried it in less then a week. Shipping is free for orders over $150.00. If you have the tools and jack stands the install isn't to difficult did most of it myself.
Chuck & Teri, 1999 35 ft. Dolphin 5350, F53 Chassis with tag axle, Chassis build date 1/99 in Mexico, Banks System, Trans Command, Air Lift Air Bags on rear, Koni Shocks, Blue OX TruCenter, TigerTrak track bars front and rear, Roadmaster 1-3/4" rear auxiliary sway bar, 2013 VW Passat TDI SEL Premium, 1994 36 ft. Avion 5th Wheel. FMCA #F430129