I have an 86 K5 theat im building from the frame up. I want to run 37's, and it will be used exclusively for rocks. I already have a 14 bolt with 4.56 and a detroit, and a 10 bolt with an ARB and 4.56 as well. I am looking for a suspension setup for it. I have a winch in the front as well. I need something super flexy (if its not really drivable on road much, its no big deal it will be trailered most of the time), and something thats relatively easy to install. What would you suggest I do? Would you go with a 4 inch lift, or a 6 inch lift? Any other suggestions?