What would me my best bang for the money? I have a 98 12 valve 4x4 dually- 5 speed with new valair single disk clutch. I haul trailers all the time and need a little more out of it. Has 4.10 gears so low end it will pull a house down. Put 22.5 wheels on it and it helped my gear ratio a lot. After reading sounds like it would help for me to get governer springs because it loses all power at around 2000-2200 rpms. Pumps turned up a little and fuel plate is moved forward a little bit. Don't like to smoke people out so I don't want that. It smokes like a train already if I am loaded and it lugs down a bit. Just had a 3rd kid so don't have much money to put into it. Please let me know! Thanks!