So I have a 2000 ram 1500, 5.2L 318 v8 with 147,000 miles on it. The truck is basically stock except for a new radiator and spark plugs, I've also had a good amount of mechanical issues fixed and I haven't had any issues with my engine or exhaust system. The truck sits on some old school 16in American Racing rims that are wide and the tires are spaced out about an inch or so. I drive it mostly on the highway a few hours each day for work, I don't do much zipping around in the city, and I don't plan on racing it. I want to keep it for about 5 years or so. I could use some help on deciding what I can do to my engine in order to preserve it's life, I really just want to give it better air flow and help it fly through the gears smoother. I also need some ideas on what my exhaust system should look like in order to make it sound badass without losing any torque. (I want a dual) I do plan on getting 20in rims and off road tires but I'm not sure if I should get a lift kit or install a leveling kit. Thanks for the help.