Nothing, I just wanted something with a drain. I seem to have to drop the pan more often than I like, so the drain would be a nice luxury. And I can't have the truck down for any extended amount of time, so I picked up that cheap chrome pan with a drain, which was advertised at 1 3/4" deeper than stock, and figured win/win. So I just screwed this whole thing up right from the start. As soon as I get the cash, I'm getting a derale 1587X to throw in the bed, and removing the one in the stock location, as it can't keep up with city driving.