I have been reading alot in here about how the 4 has a smoother ride but kinda under powered, and how the longer wheelbase helps in rock crawling a little. Right now I have a RZR for my wife and son, but nothing for me just yet. I plan on fixing that around this summer with a used unit (when I come back from Iraq on leave). I plan on getting one to build into a nice trailrider, but pretty good rock crawler. I have been looking at some pictures of frames and a build by Jagged-x, and I am thinking about cutting the frame and stretching 12 inches. I already planned on a new rollcage so thats not a big deal. I think the rest of it is the drive shaft, wiring, brake and throdle cable and rad hose. Any thoughts about this out there?