I've been looking at these for about 5 years, Two 1950s Brockways, one has air the other doesn't.
Remove the roof of the cab, lower the windshield, channel the cab on the frame, move the gas tanks to behind the cab, drop the suspension lowering the frame, add the 1900s hump top trunk I have, bolt a coulpa spares out back; Hazzah! The world's largest Speedster!
It's not like I don't have enough to do.
This, only BIGGER.