Well, there you have it, some like Chevys, some like Fords. Neway seemed to "pogo stick" down the road. It's the 1st air ride I remember seeing outside of Pete or KW. FL had a nice air ride too, and as much as I didn't care for Neway, it was still better than springs. Now, on the wagon, I actually preferred spring ride. Air ride trailers were tippy, it seemed.
Imo, just purchase a rear cut off from a newer model truck and transplant it. Newer axles and modern air ride.