GLRR has GE U-something from US Gypsum company. I have seen U6Bs which were alledgedly constructed as late as 1992, there are many of them around (although none others I know of in the US).
I've read about the D&S's modified air brake system which has automatic and straight lines. Do you folks in Chama use the same system? Assuming you do, does that mean anything foreign for you run has to have heavily modified brakes before it can run anyways?
Let me reassert so as to avoid getting flamed: I'm not suggesting dieselization!!
Regards,