I will post some images tonight when I get home. The trick is mounting the fan on the chassis, not on the speedo, and taking advantage of either the front wheel arches or the rise in the body towards the crossbrace, depending on if you have the battery mounted inline or transverse.

Alternately, if the fan is hitting the body, mount the body and heat the lexan where it is rubbing the fan with a lighter until you can mold it around the fan. Should only take a slight bump to make it work.