Pics of a 5.9 and a 6.7 injector side by side
 

http://www.alacable.com/forsale/2008dodge/DSC00493.JPG and more pics of the same here too 2008 Dodge Ram 3500 Quad Cab Metalic Black Rebuilt 6.7 Engine For Sale Call John 334 806 7503

Thanks for the info. I was always curious whether or not those were similar.

No problem, I'm just trying to help. I did put the 5.9 in my 6.7 head and it did fit. and took it out to put my 6.7 back in

what the hell head is this?

http://www.alacable.com/forsale/2008dodge/DSC00620.JPG

LOL it was one i took today. I was going to use photoshop and copy the pic of the cylinder part and paste it to my 6.7 head and tell ya thats why it runs so good!!! cause its a 5 valve... LOL its off a VW

will they run right off the 5.9 injector there a different spray pattern right

yes diff spray and the 5.9 ecm wont run the 6.7 injector