I hate to sound like a broken record, but I am not familiar w/ this 6.0 stuff...My dad recently purchased a '03 F-250 w/ 6.0 in it. He wants to get some more power out of it because we will be towing a toy hauler from IA to back to Alaska next month, currently it just has a K&N Intake system, I was thinking the SCT tuner? But what custom tunes are the best to get burned to it? Where do you get it from? Obviously 4" TB exhaust is next...thanks for the help :thumb: