Howdy Bob, you might contact Tom about his neat open passenger car. I got one in 1:35n2 and it is a beauty.
Before & after shots. All I had to do was attach trucks & bolsters, couplers, paint, and desperadoes.
And it wasn't expensive either. Tom has some short cars like this which might be more what you want. Check his Shapeways listing.
____________________ It doesn't matter if you win or lose, its' how you rig the game.
Built four more cars. The chassis are the same as first two. Varying the end boards for variety. Need to add the stake pockets and hardware then paint. Have journals for two more. That will bring total cars to 40.