custom tuning

I want to swap my 2004 ram pcm to a 2005 pcm so i can get a custom tune and cam and spray for my truck i just need more info also will this affect me (if i do the swap) with emissions thanks.

Recently i bought a Diablo Trinity for my 2012 ram 1500 I hooked it up and set it on the pre-program for 91 octane And to find out it did nothing I was very upset for spending $590 on a program and nothing !!!! I live in Bakersfield California and I was looking for tuning shops in California And...