Re: Lift on my J10
i believe if it's what i'm thinking...that with 4" springs you'll need blocks in the rear as well. an additional shackle flip will increase the heighth of rear even more making it unlevel. i put a 4 inch on mine and it seems level to me. but then again due to spring sag over time this can cause your problem as well. you may need to re-arch your springs or add a leaf. just suggestions.