Mine is also orange. It has a newer carb and alternator.
http://good-times.webshots.com/photo/2612692550101465522UEYTNQI would agree, government agencies always have different stuff. The 56 ton and a half Napco I had had a 261 which was available for 2 ton trucks but it was a power co. truck. I know a local fire department that bought stock piled new old stock diesel engines and was able to use them in new trucks without meeting that years emission standards.
