The quickest, least expensive solution is a spacer. Your local big box parts store has probably got a universal fit flex fan and spacer that will put you in business quickly for just a little pocket change, if you don't find something from the boneyard.
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!