There WAS a prototype Scout III..
http://ourworld.compuserve.com/homepages/Scouter4/scoutiii.htm It obviously didn't see production.. Doesn't look a BIT like the Scout II.. Wish I could find a solid one with the SD33T Turbodiesel.. :) MMmmmmm...They make a fiberglass reproduction "tub" if someone wants to go insane rebuilding one!