I had posed this question on a yahoo group page sometime back, and thanks Josh for the help! Im now starting this project of building a small fleet of BNSF business cars. So far have 1 car, and 2 on order. Im not planning on making dead on exact models of each car, but looking for reasonable stand-ins. So far have the Kato business car for the Mississippi River, a diner from the super chief set for the Fred Harvey, and found a close car for the mountain view/valley view. Of course, figuring out the best way to patch windows and make it look good, and adding fluting to some smooth side cars with close window arraingments are the biggest issues I could use some advise on! But, if anyone has done some cars, how did ya do it, and drop some pics!!!