I'm trying to figure out something to put in a sig or something so people won't get confused.

You want your fan to PULL air...not push it. Your fan needs to be on the side of your exhaust. A pic WOULD help but I don't want to freak you out. Have you considered a cool tube? Low on space, you can hook them together easily and if you have one GOOD inline fan it will cool them both. You'd need six inch ducting instead of four inch however.