Awesome new Ford F-450 K-DAWG!!! Have you pulled with the new Big Dawg F-450 yet? Let us know how it compares with your 2005. Did you put on the Firestone Air Bags--just wondered. I have Air Lift bags on my 2012 F-250 and pull a 41 ft Designer fiver and the new 6.7 PSD with 400 HP really out pulls my old reliable 2001 F-350 PSD 7.3.(the 7.3 was a great engine ,but 10 years of better technology in the all-new 6.7 makes a world of difference!) Just wondered if the Firestone bags ride better than the Air Lift bags unloaded---K-Dawg do you or Anyone have any experiences to share because my Air Lifts (aired down to 5psi) ride pretty rough unloaded---Would the Firestone bags be smoother?? Thanks!