A bike forum thread about Jeep Comanche.
http://www.bikeforums.net/showthread.php?132348-jeep-comanche-tsi
Here is a guy who runs a Jeep Tech website, featuring the Jeep Bikes. Here is the connect form, for I am guessing he may know a thing or two.
http://www.jeep-tech-tips.com/contact-me.html
Hope some of this helps.