8 inches on center is a 2 inch lift. You want to watch how much shackle lift you put on it cause is affects the caster angle. Most people only run a 1" shackle lift, 6" on center..
All the revolver shackles Ive been around were real close to stock height. So you might be losing lift with revolvers. They dont add lift, they increase drop. Make sure your brake lines are long enough for those suckers too
91 Laredo, 4.0ho, TF999, Magnaflow exhaust, Yukon rear axles, Spartan Lockers, Posi locker, 3.5 inch springs, 1"MML, 1"BL, 1"shackles, trimmed fenders, raised flares, 35x13.50s.