Which would be better? A 6 in BDS lift in the front and a shackle lift with 2 in block in the back. Or a 4 in BDS lift with 1in 0 rates moving the axle forward 1 in and just the shackle flip in the back? I am planning on running 37in SSR’s or 37 BFG’s . My truck is an 86 GMC K3500 with a REAL crappy 4in lift with 35in BFG’s. Right now I rub like a bitch if I flex at all (I really think it’s a 2.5in OLD Les Schwab Rough Country lift, not a 4in). I am looking for a good ride and decent flex, but it is my daily driver, so it doesn’t need to get kooky off road. Thanks for your help.