http://www.wtvm.com/global/video/flash/popupplayer.asp?ClipID1=2537184&h1=Local%20man%20swaps%20tractor%20engine%20to%20conserve%20fuel&vt1=v&at1=News&d1=143100&LaunchPageAdTag=News&activePane=info&rnd=63204215
i wonder if it carries the fuel efficiency when at highway speeds