From what I read from searching. Is that a stock 56 in the rear will gain no lift over a 52"? So with a shackle flip would get me 4" lift. So if I bought some new 56 springs with a 4" lift would get me a 8" lift? And if they sat a little to high I could probly remove the overloads? Holding sombodys had some experience using a 4" lift 56 in the rear with a shackle flip