What are the best mods to get for the best bang for the buck. I am doing stuff before taking to the custom dyno tune near me. I haven't see a good deal of benefit of different intake. I do think an exhaust might help. Not sure a Cam is a big gain for the hassle it could be if it is not me installing it. Have a 2016 denali HD with 6.0L. Not a race truck as well. Would like the numbers for hp and tq in the 400s.