Whether you have the automatic or manual transmission version of the RX8, you will get a new Wilwood clutch master cylinder as a part of the swap kit. This part is required because the Camaro six speed manual transmission clutch throwout bearing actuator requires more hydraulic force than the RX8 clutch master cylinder can manage. However, the Wilwood master cylinder requires a slightly larger access hole. So, you will need to open up the existing access hole about 1/8 of an inch.