Why not? Maybe because it is different, everyone runs SBC's or LS motors... If you saw the whole buildup of the jeep it is going in you would understand this is not your typical Scrambler. Not to mention that a 4.2 straight six even geared will have a problem turning the 42" Pitbull Rockers that are going on it. Rock Crawling ain't always just Rock Crawling, sometimes you need to get it.
Clay