What brand/type of shackles is everyone running on their 40 Series? and did any of you achieve additional lift with the ones you chose? I'll be ordering next week and am looking for input. I like the shackles offered by Man-a-fre/BTB. Some say 80 and up and others are early to 80. What's the difference? @lelandEOD: You said you didn't like your lift/shackles. Where'd you get it and why don't you like it? I am looking for strength and function/usability since my springs are gonna be build for flex and articulation. I do plan to do a shackle reversal and I THINK both axles will be pushed out bit.