KW 600 with a Cummins. Not that I'm a dodge guy by any means, but this engine has performed better than the CAT's and Detroit, and Pacar engines
The jake brake actually slows my $hit down! Lol
If those are your 2 choices I would go with the higher end Infinity components.
There's tons of brands out there. Just depends your budget and how dedicated you are to those brands
+ amplified obviously