I know Cat was the most reliable...I have a 2006 C-7 it's great... I'm glad I don't own a 2007...lol
Cat had to put bigger radiators in the 2007 models....Hmmmmmm more heat to kill your engine, wait until the exhausts clog up and the cooling system overloads ! then engines start failing.
I dont see Cat using this system very long....Diesels are sutt riden engines, their design won't last IMO.
I'm the smart one on the right, or was that the left. RV'ing is fun with my Aero Exhaust !