Knock Sensor

When installing a knock sensor on an engine that never had one what one do you use? And how many sensors do you use? I am working on an inline 6 that has a turbo and makes a little over 600 hp on 7lbs boost. Thanks Rick

I have had good luck using the Bosch 0261231188 sensors. If I could find suitable mounting locations, I would use 2 on an inline 6 cylinder.

Thanks, I welded 2 flat surfaces to the top of the block at cyl 2 and 4