Ever wonder why ATS has such a warranty????
Just slip onto some of the other diesel boards and see how poor their reputation is and you will understand why.Better yet call down to Innovative Diesel Performance and talk to Eric about how well his held up in the truck I currently own,which was bought from him,and you will not have to wonder why there is a NADP nestled between the frame rails.
If I wasn't going to buy one locally from Ladell Weaver or have Va's Tim Barber at TRE build one then it would only be one of 4 choices for a new one......NADP-Goerand.HTS or DTT.
Tim Barber and Ladell Weaver can handle ANYTHING you want to build for your truck.If drop in replacement is the way then I would say NADP,Goerand,HTS or DTT in that order,but,its your truck and your money.
I am a anti-ATS owner having been screwed by them myself on other projects/parts and their failures.You would NEVER find anything Purple from them on my truck and as soon as the weather gets a tad better where I can uncover the black truck their POS leaky exhaust manifold will go also.