I currently have a 4" superlift and am finally getting around replacing the remaining stock bushings. I have looked at the ORD front shackles and the greasable rear end kit...how good is it? I am mainly on the street, but I try to make to the trails at least 4-5 times in the summer and to the mud as much as I can in the winter. Will poly restrict my articulation too much or will it be just fine? Anyone who has used these and can give me some info would be great.