ironman_gq wroteyou can get a taurus fan for under 50 bucks at the yard and they have a high and low speed and pull up to 4000cfm.
ditto... can find a junkyard one for cheap.. got one off a buddy that planned to use it in a YJ.. but he had no room.. so gave it to me to put in my CJ-5 witht he 360.. it'll fit perfectly...