Hi all, big broad question: Model manufacturers seem to make two different brakevans, the GWR "Toad" and the LNER one with the chassis longer than the body. The LNER one seems to appear also as LMS and both as BR. Peco also puts their N gauge (LNER) body on a standard wagon underframe. Is there a potted history of these anywhere? Can I modify the LNER/BR model into different versions so I don't have lots of the same brakevan. I have found a 3 axle variant which I might do as I have a couple of broke ones in the bits box.