In the file section of the National RV Forum on Yahoo Groups there are a couple of files you will be interested in. One is for a 2006 Surfside Schematics and a brochure for the 2007 Surfside. Didn't see any owners manuals though. You will need to join to access the files, it's free.
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.