Ive done what Jpar is wanting to do with the fans and I ended up having over heating issues. My set up had twin 10" fans that Perma-Cool claims moved 400 sum cfm each. The shroud was not allowing enough air flow thru the radiator at speed. It was way to restrictive. I could had cut more holes in the shroud but just opted to go back to the stock fan with a shroud. I just dont want to see anyone else run into this problem, my thread is below with pics of the setup I had.
http://www.forabodiesonly.com/mopar/showthread.php?t=277443