Any recommendations on a slim fan for a 2004 Mach 1? I need some extra room for my new turbo. I may be able to hack up the stock shroud enough, but if I can find a slim fan setup that will work as well I'd prefer to go that route.

This 16" from SR Performance looks good, but the CFM seems awfully low, especially for them to be touting as an "upgrade" over stock.
http://www.americanmuscle.com/mishimoto-16in-fan.html