I am considering ordering a Black Magic electric fan from Summit tommorrow, and was wondering if anyone has swapped one of these into their first gen mustang? The possible problem I see is the depth of the fan, it is listed as both 4 and 4.25 inches, 4 inches is an extremely tight fit, and and 4.25 will flat out not squeeze in without offseting the fan motor. I'm not sure how accurate the dimensions are tho so I was hoping for some first hand experience. Also if this is a no go then what other fan would you fella's recommend for a very mild 289 w/ a/c, and the electrical system has been upgraded to handle the added draw.