There is another thought. I would need to look but some of those 585 engines were built in Charles City.  I do not know if the 504 or 800 engines were or not. I am not a Moline guy but we had 2 of those 1400 diesels  around with M &amp;amp; W Turbos from the factory when new! I guess the 800 engines in the A4T 1600 were special order.