depends on the truck...as far as the new 6.7L..it's still new...everyone is up in arms on them...havnt seen one around here roll in w mods to know what they would do honestly.
i'll try to talk to a few techs and see what's up...usually with MILD mods they are pertty cool.
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2000 Ram 2500 QC Sport
K&N Intake with Amsoil filter, 5" soot pipe, Autometer boost/egt/fuel/trans temp, Coaltrain 100s, Airdog150, Full Billet DTT (with 48RE valve body), Adrenaline with Pulse, Stealth Plate, 285/70R17 Rubber