You may be able to find replacements steps and parts at Out Of Doors Mart or Inland RV. I got new step parts for our '87 from Out Of Doors Mart, but I am not real familiar with the steps on your Overlander. I do know they both will have the frame outriggers that you may need.
Carl, Elaine & Finn The Beagle
2006 30' Classic W Slide & Limited Package Katarina
2006 GMC 2500 HD 6.6 Turbo Diesel Crew Cab 8' Bed
NQ3U (was KB3UOM)