Be sure to use the 4.3 fan as well- - - -otherwise you'll get a no airflow situation at highway speed when the fan can't push the air forward against the ram air coming through the radiator. That happened to a friend who put a Vega fan on a Chevy II 194 engine.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!