I might buy a 2018 F450 platinum tomorrow, and looking for camper brackets and air bags. Looking on line it shows there are no air bags that fit the f450s. Is that correct?
Looks like there are some for non dually only

 

 

It possible that you won't need them. It takes 3000# to get mine to squat 2.5" and touch the helpers. According to the spring specs, it will take over 4000# to squat one more inch.

I figured I'd want airbags and was sure I wanted an aux tank in the bed when I bought my 2017 F450. Well, after driving 20000 miles I have neither, nor want them anymore.

 

Doubt you'll need them. Put a set of Torklift upper and lower stableloads on and I bet you're fine. I carried an Arctic Fox 1150 TC in my 2015 F350 DRW gasser and the truck never knew it was there and they are heavy beasts. I'm towing a fiver now so haven't had a TC for awhile but the Torklift Fastguns are fantastic for tiedowns.

 

Hauled my TC on the '17 450 without airbags, and subsequently with airbags. I personally prefer it with airbags, and run them about 80 psi.
Yes, the truck certainly handles a TC without airbags and drives just fine. I'm just not a fan of the squat when carrying a heavy TC, which put the nose level to slightly higher than the rear. Headlights in the sky blinding traffic (adjustable of course). Just looks like it is carrying a heavy load. With airbags, I maintain a level to 1" rake (rear higher), headlight angles change less between loaded and unloaded, and if you have a compressor, you can use the airbags to help level the camper. And when its not loaded, drop them to 0-5psi and you can't tell they are there. For me, I'm happy with my airbags. Again, though, they aren't required on a 350DRW or 450.