Speed signal sensor

[nano]

Hello, 

Who has ever mounted a speed sensor to the rear of a Starlet?

What type of sensors to choose and where it should be mounted? Is it a quite easy operation?

This is for setting launch control based on rpm and ground speed.

Thanks

[daniel_g]

Use a rear disc with an ABS ring and ABS sensor.

[nano]

Thanks is it possible to get the ring , i have the disc with no.ring and no abs.