If you are looking for where to buy parts, I would highly recommend Bully's performance, if you don't see what you want on their site, just message them, 9/10 times they can get you it. I have gotten almost all of my mods from them without a single problem and at great prices. Now if you are looking for mod ideas, I would recommend starting a thread in the R/T subforum HERE. List if you have done any mods, what you want to try and get out of the truck and your budget. Another great spot to look at mods would be under the 5.7L Hemi section HERE , just spend some time looking around that section at what people have done to the 5.7L and you will find stuff that interests you.