Hey skytone to answer your question of who has a 307:1 crawl ratio in an Isuzu, it's a friend of mine from Texas. He runs the stock 3.2 isuzu engine bolted to a 3.5 bellhousing, bolted to a Toyota Transmission, bolted to TWO Toyota transfer cases. O'ya if that wasn't enough he has the Marlin Crawler gears also. It's an SAS Rodeo. His wheels when set at the lowest setting turn two revolutions per minute.
He says he can put it in gear at the bottom of his drive way, start it up, walk to his garage, into his kitchen, grab a beer, open it and come back out before his truck gets into the garage. It's phenominal on the trails in Moab! Now knowing all that if he is running 35 inch tires what would his et be on the quarter mile? I bet you would have to clock him with a calendar instead of a stop watch.