Have been watching for the past several months, ongoing series of chassis modifications of editor's AD truck in "Classic Truck " magazine. Can anyone tell me, if these are unique to the 47-55 chassis, or can these same products be applied to the 41-46 frame? I understand all of you may not have seen all these issues, so I guess I'm asking can you put 47-55 components in a 41-46 frame? Or are they really significantly different?