GKTECH NISSAN SOLID REAR SUBFRAME CONVERSION BUSHESListing is for: 1x Set of Nissan conversion bushes The GKTECH solid subframe conversion bushes are a direct replacement of the standard items and allow you to fit an S14 S15 rear subframe in your S13 180sx, aswell as R33 R34 rear subframein your R32. The solid bushes also ensure that movement of the subframe is kept to a minimum. They eliminate axle tramp whilst also raising the subframe 15mm which helps to correct the roll center on lowered vehicles.