I have a 1997 dodge 2500 ext. cab, which has 120k miles, daily driver, hauls 4k every Friday night April thru Sept. , 5 speed nvg 4500, 3. 54 gears, star wheel turn forward quite a bit, amsoil air filter, silencer ring removed, dynamax 4" muffler and tail pipe, resinator cut in half guts removed welded back together, no guages, 15-16 mpgs. I am looking to improve what I have with what I got. My co-worker bought a 2000 power stroke with a dp tuner. Looking for some input and help. Thanks, this is my first thread.