I have a 2006 that is basically stock. What I have done to it is in my signature. But for all intensive purposes it is 100% stock. I have been thinking about adding a little HP. I am not looking for a race car. My trans is original and the truck has 95,000 on it. My injectors are original. Am I asking for problems adding horespower to these older componets? Should I leave it alone. Not looking to create a large bill for myself. If you think it is safe for a tunner please make a suggestion on brand and model.