Seems very over engineered, I personally would just ditch all blocks and do all spring or shackle flip lift. Shouldn’t need a traction bar if you have decent springs
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I have never used the shackle flip, at first it sounds like a great idea. But then you hear reports from people who have used them that it moves the rear wheels forward in the wheel wells, and also messes up the pinion angle requiring pinion shims to correct it.
Lift springs can be good, but they are expensive and I wonder if they are progressive like the factory springs? I like my factory ride empty.