The "assumed" air ride was marketed exclusively by Peterbilt until 1971, it was the Western Unit Corp and called "Staibilaire."
When Peterbilt dropped the suspension exclusivity Freightliner picked up the suspension so they could offer an air ride.
Tim
Other forums have the builds from the finished models separate sections. I find it more difficult to keep up with things that way. I guess I'm getting old, one spot, find it all.
Tim
A resin air cleaner or swap ones from another kit, make some new tubes. KW's were available with the square Farr dry-type air cleaner from the AMT Road Boss/Diamond Reo. I think Dave Natale has these in resin?
Tim