The GKTECH polyurethane diff bushes are a direct replacement of the standard items and ensure that movement of the diff is kept to a minimum within the subframe which is quite common under hard driving conditions. Compared to the solid variants that we make, these give a little more give. - ShA 90 Polyurethane Vehicle Compatibility: - Nissan Z33 350z - Nissan V35 Skyline - Nissan Z34 370z - Nissan V36 Skyline