This is the 3rd of 5 GP18's to join my roster. The shell is a Walthers GP18 that came factory painted in the Maroon and Stripes. Walthers Rock Island GP18 I painted the yellow on the nose and the rear. Added the flared spark arrestors, firecracker antenna, cab shades, 5 chime air horn and renumbered it. The air filter box was scratched out of styrene. I used Pan Pastels for the overall weathering and a product called P3 Armor Wash for the stain under the rear grille. The Walthers chassis was replaced with an Atlas GP7/9 DCC ready chassis which was milled and ground to fit. Later, I got around to installing MTL couplers. It was another one of a kind Rock Island unit.