is a shackle flip a good way to gain a few inces in the rear. and i can get rear springs off an 83 F250 and was wondering if i can put them up front to match the shackle flip. anyway if anyone can give me some insight that would be great. oh yeah while i'm here what do you do with that steering box on the inside of the left hand wheel that my tire rubs when i make a hard right hand turn. thnx