You can install a low range trans into a scrambler from a polaris xplorer 400. I think it is from 1999 to 2001 400 xplorers. If you want more info go to gen3usa.com you'll have to dig through the posts but there are write ups on guys doing this mod. The years I mention are for 1999 and newer scramblers, if you have an older one they you go with the older xplorer's 1998 and older (front chain drive). Hope this helps