i have a 75 chevy swb pickup i already did a redneck shackle flip along with alot of other stuff, im trying to figure how to fix the crumby parallel shackle angle in the rear without moving the hanger forward on the frame, and am curious if anyone has tried running 54" s-10 rear leaf springs, im just thinking that with those springs mounted long side back and a little bit longer shackle i would end up with a better shackle angle and a longer flexier spring, just curious if it might work or what would be not good about that setup, any advice would be appreciated thanks