Miata with Ford 8.8 Rear Conversion 900HP Axle / Hub kit. The 900HP axles feature our larger spline outer CV made from proprietary material, with a set of wheel hubs to accomodate the larger spline and our chromoly ball and cage design 28 spline 8.8 inner CV. The axles are complete and ready to install with no modifications required. Kit includes both axles, wheel hubs and studs.