I have a lly with 345,000 on factory injectors. Last year when I had the injectors out for head gaskets, the injectors were on the edge of needing replaced I just didn't have the funds to do so. Well they r to the point of hazing at idle and balance rates are getting pretty bad. I ran across a kit that includes nozzles, pintles, o - rings, the ball and seats as well as the crush washers for about $500. I have seen people rebuild lb7 injectors, just not lly and was wondering how big of difference there would be and if anyone has done this?