It is under the cover on top of you engine. You will need to remove the bat wing first (I think), to gain access to some of the mounting bolts for the cover. My Bat wing is MIA, so I can not look to see if this is a true statement.
The CCV can be purchased from Geno's Garage or a Cummins dealer cheaper then the local Mopar dealer. Part number is CV520010 for $59.85 +shipping from Geno's. This should be changed around 65K to 67K miles, per Cummins.

 

Thanks Jim W
I only have about 30k but i'm getting the overhead message every 2400 miles. Only way to clear it is with the smarty. I will pull off the filter and look at it.