looking at picking up a 40 that was made in May 1971, with some later model parts on it. I will be parting it out as I think it is a good deal, but not sure about the lift springs. They look new, truck has been sitting for 3 years with no motor, still have factory stencil, no sagging, but they were made by Rancho. If I end up buying it, I'll have lots of stuff for sale.