I ran out and took some pictures of the geometry project. The hinges were previously dissembled, blasted, and rebuilt before getting to rust so ignore my work ahead of me de-scaling and painting. One way, width appears o be roughly 2 1/2" factoring in springs. The other way, they appear to grow to 3". The hinge pocket looks like 2" on its best day. It looks like there has to be some sort of contortion project to get them installed. I cannot imagine them having to go through this on the assembly line all day when trucks were built new.Someone knows a secret that I have yet to figure out.