Are there 2 different 5.9 magnum motors?

 

I do not believe so however, someone will correct me if I am wrong.
Pretty sure that depending on what year you get, that it may be balanced differently...
(curious to find out if I am right)

 

Nope all Magnum motors are the same through out the years. There has been very small differences, nothing that matters though. This link has probably all the info you need if you wanted to know. http://dodgeram.org/tech/gas/specs/index.html

The main changes were intakes and electronics.

 

Crazy, thanks for the link, that is exactly the info I was looking for.