you can benefit from optional "C6 Rack Offset Spacer Kit" that will allow you to achieve even bigger steering angle on C6 chassis (not needed on C5) and improves the Ackermann curve

This also aids in valve and guide cooling

Wisefab BMW F-Series angle kit can be fitted on a variety of BMW models such as: F20

but then the factory-designed kinematics won’t work as they are supposed to

Check out the Mazda RX8 rear suspension kit

JR Wheels SL02 20x10,5 ET15-45 5H BLANK Matt Gun Metal CB: 72,6 Merchendise you can benefit from optionalPCD: 5x108, 5x110, 5x112, 5x114. 3, 5x115, 5x118, 5x120 ET: 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45