I have been working on my radiator support and mounting the dual 13" Derale fans. I don't like the looks of the motors so I was thinking about making some covers for them. I'm concerned about the cooling of the motors, and I've sent Derale an e-mail asking about whether a cover would be a problem but they haven't answered yet. There's not really any obvious cooling holes or fans on the motors unless they're someplace where they're not visible. Looking in the holes on the back of the motors I don't see anything obvious and no cooling passages. So I am wondering if it's okay to put covers on them or not. Maybe I should leave a space between the motors and covers?

Here's what they look like...