I have not seen the LGB cars behind the FA-1 know whether they're the same general size. They're about the same proportions as LGB's F3, but that's oversized (closer to 1:26). Having said that, I find the LGB streamline cars to be a bit chunky and squat, so I'm personally not a huge fan of them as it is. For my money, if you're looking to get streamlined cars, go with USA Trains' streamliners. They're pricey, but worth it.