Who can give my some info about this engine. Looking for the year and general info. 
What would you have to change to fit it to an D4? 

Thanks Niels

My s/n info tops out at 9S9400 in 1953 so 9S13330 is later, probably 56 or 57.
Big difference in bottom end of Industrial engines vs Tractors. Different pan to accommodate the equalizer spring.
Engine oil pump is multi section to handle scavenging on the tractor, single section pump/sump on the Industrial.
Governor and rack setting is going to be different. Best to get the actual parts books and rack setting charts to fully compare differences.