On my most recent trip to my FLGS, I spent some time gazing longingly at Sidewinder. Did my budget but allow...
I have also been mining other, older (and non d20) games for resources. Games like Castle Falkenstein, from R. Talsorian Games, Space 1889, from Game Design Workshop, and Masque of the Red Death, from TSR.
I'll be looking into that train site. I've just started, but it looks like I may have to sift through a lot of info to find what I want. Maybe time for a trip to the Downtown Central Library.