Miata with Ford 8.8 Rear Conversion 600HP Axle / Hub kit. The 600HP axles feature our larger spline outer CV made from proprietary material, with a set of wheel hubs to accommodate the larger spline, and a Porsche type 108mm Inner CV with a bolt-on 28 spline stub to fit the 8.8 differential. The axles are complete and ready to install with no modifications required. Kit includes both axles, wheel hubs and studs.