Just recently upgraded from my old c/k 6.5 Detroit Diesel to this beauty. It was love at first sight. This newer tech is a whole new animal to me but I love it. She's getting about 21mpg with the mods listed just wondering what type of gains I can look forward to after an air intake and perhaps some advice on the best type/fit for this model. I've been leaning toward S&B but would appreciate any and all advice.
