
FORD
| MUSTANG | Years | Spindle | Bolt Circle | 1 Pc Rotors | 2 Pc Rotors | Evolution |
| 1979-1993 | 300100 & 300102 | 4 1/2″ B.C. | B4145WC | B4145WC2 | B4145WCE | |
| 4 3/4″ B.C. | B4144WC | B4144WC2 | B4144WCE | |||
| When using forward mounted steering rack | 1979-2004 | 300111 Long Arm | 4 1/2″ B.C. | B4145WC | B4145WC2 | B4145WCE |
| 4 3/4″ B.C. | B4144WC | B4144WC2 | B4144WCE | |||
| 1979-1993 when using SN style brakes | 1994-2004 | 300104 | 4 1/2″ B.C. 2 Piston Calipers | B4446WC | B4446WC2 | N/A |
| 4 1/2″ B.C. 4 Piston Calipers | B4146WC | B4146WC2 | B4146WCE | |||
| Ultra Lights – When using forward mounted steering rack | 1979-2004 | 300116 Long Arm | 4 1/2″ B.C. | B4153WC | B4153WC2 | B4153WCE |
| 4 3/4″ B.C. | B4154WC | B4154WC2 | B4154WCE | |||
| Spindle Mount Wheel | B4597WC | B4597WC2 | B4597WCE | |||
| When switching over to Fox Components | 1994-2004 | 30100 & 300102 | 4 1/2″ B.C. | B4145WC | B4145WC2 | B4145WCE |
| 4 3/4″ B.C. | B4144WC | B4144WC2 | B4144WCE | |||
| Ultra Lights – When using RCI’s Front Race Kit | 2005-2014 | 300108 | 4 1/2″ B.C. | B4153WC | B4153WC2 | B4153WCE |
| 4 3/4″ B.C. | B4154WC | B4154WC2 | B4154WCE | |||
| Spindle Mount Wheel | B4597WC | B4597WC2 | B4597WCE |
GM
| CAMARO | Years | Spindle | Bolt Circle | 1 Pc Rotors | 2 Pc Rotors | Evolution |
| Factory Steering Box | 1982-1992 | 300106 | 4 3/4″ B.C. | B4118WC | B4118WC2 | B4118WCE |
| Rack & Pinion Steering | 1982-1992 | 300110 | 4 3/4″ B.C. | B4118WC | B4118WC2 | B4118WCE |
| Ultra Lights – When using RCI’s front race kit | 1982-1992 | 300114 | 4 1/2″ B.C. | B4153WC | B4153WC2 | B4153WCE |
| 4 3/4″ B.C. | B4154WC | B4154WC2 | B4154WCE | |||
| Spindle Mount Wheel | B4597WC | B4597WC2 | B4597WCE | |||
| Using 3rd Gen Brake Kit | 1993-2002 | 300107 | 4 3/4″ B.C. | B4118WC | B4118WC2 | B4118WCE |
| Ultra Lights | 1993-2002 | 300115 | 4 1/2″ B.C. | B4153WC | B4153WC2 | B4153WCE |
| 4 3/4″ B.C. | B4154WC | B4154WC2 | B4154WCE | |||
| Spindle Mount Wheel | B4597WC | B4597WC2 | B4597WCE |