Knock sensors gauge
MSD makes a knock meter for about $200. Comes with a 6 kHz GM sensor, and doesn't require the ESC module.
http://tunertools.com/proddetail.asp?prod=MSD-8964
Livorsi Marine sells the Anson knock meter system, with a customized gauge. You can tell from their prices that they are dealing with a different clientele. Either that, or I'm giving my stuff away.
http://www.livorsi.com/catalog/water...NE_KNOCKMETER_


