Couldn't get a fan on my 250 in a 3100, so I put a "new" junkyard electric fan on the front of the radiator. With the water pump pulley and no fan blade there is about a 1/2" between the radiator and pulley. I am using the stock trans and rearend-FYI
Picasa albumn link - a few picks of the new 250 engine mounts


....David