many tractor pullers in the unlimited alcohol class run a diesel converted to alcohol...a fellow bout 30 min from me in eighty four pa runs 2 of these (siver bullet and reloaded) on is a 3208 cat on alky and the other is a duetz air cooled (German) motor...here is a link with some info about the tractor http://www.cen-pe-co.com/Silver%20Bullet.htm