not a bigger fan, a shroud, which 58/9's originally had - if the fan blades are more than 1/2 - 3/4" from the rad you'll have overheating in slow traffic all summer without a shroud

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot