I spotted a 2000 Ford F-450 dually crew cab on a lot today and stopped to take a look at it. It has a diesel, 4x4, 6-speed transmission a flat bed on the back of it. Would I be correct in assuming that the main differences between the F-450 and a F-350 of the same year are the towing capacity and the brakes? Does anyone have any advice on this 2000 F-450? Good things? Bad things? Things to look out for that were common problems on them?