since your in Ill. go see 4x4 sac-man fab and have him re-wire the entire engine compartment, I have seen his work, and i bet he can re-wire your speedo to hit at least 75 in the sand, and a CVT / rad fan upgrade will keep you trans cooler so that it produces more hp. Other than that you might want to go with the ancient chinese secret motor swap, PM UTV Mayhem he is in China as we speak, and would ship you the Techumesh 2.3 liter 7hp motor need to do the swap. and if that does not fill your needs burn it to the ground collect insurance and buy a Douche.
out