Hi, It has been a while since I have been here but I have a problem with my shorty . I have a full 3" exhaust system and no matter what I do I cannot stop it from knocking underneath against the floor . I still have stock standard springs and shocks . I have 140K on the clock . It seems when I'm on the blacktop its okay but as soon as I go up a rise or add weight it knocks . I have talked to different people . Some have suggested air bags others adjustable shocks others a 2" lift . Now I'm confused as to what to do . I do a fair bit of towing so you can imagine what that is like . If I go for a 2" lift with new shocks and King spring what else do I need to be aware of underneath ,such as brake hoses steering extension . I sure would appreciate some ideas . Thank you Foxy