This is the one i picked up. E-bay vendor, damaged box in initial sale, returned and resold at $66. with box damage noted, no damage to the unit. Full kit with all the sensors. Spoke with Trail Tech before buying. Given my application, (air cooled) doesn't really matter which kit i bought. Turns out this works perfectly with the temp sensor off the spark plug washer.
http://www.trailtech.net/digital-gau...-75-402-silver
At one point I ran a near six-figure/year amazon toy store on the side, did a LOT of returns on slightly damaged during shipping packaging. Usually collectors or gift buyers. Buys like this you gotta jump on and trust in paypal buyer protection.