There are so far no KS class 2-8-0's available. However, if you download Ben Neal's USRA Light 2-8-2 (Mikado), USRA Light 2-10-2 (Texas), and USRA Light 4-8-2 (Mountain), found on his website,
http://www.steammachine.com/bdaneal/ (direct link:
http://www.steammachine.com/bdaneal/gbdl.htm), you can download three locomotives off the DLS. They are: 'Southern Ms-1 2-8-2 6285' and its tender, 'Southern Ss-1 2-10-2 5200' and its tender, both made by cincysouthernrwy, and 'Southern Ts-1 4-8-2 #1482' and its tender made by cmoehrle. If you download sniper297's '297 Frisco 1522 4-8-2 Mountain Type' and its tender, you can download my '412 Southern #1409 4-8-2 Mountain Type' and '412 Southern #1409 4-8-2 Mountain Type V2.0' and the matching tender to go with the two. All three of these Southern Mountains are also on the DLS. However, if you want 4501, go to the Trainz Forge website,
http://trainzforge.weebly.com/index.html, you can download 4501 in freight colors (direct link:
http://trainzforge.weebly.com/sgsteam2.html). There is a 4501 in Crescent colors on a website somewhere, but I don't remember the website off the top of my head. If you download the Norfolk and Western Class J on Ben's website (there are two, you need to download the one at the very bottom), the same website that has the Crescent 4501 on it also has a Norfolk and Western #611. Both the Crescent 4501 and the 4501 on Trainz Forge require the USRA Light 2-8-2 (Mikado) on Ben's website.