That looks like an old 1.3 FPE engine http://www.fpengines.com/html/company.htm

You can use a sensor for the RCEXL ignition. The old one is epoxied in the hole. You will have to dig it out and glue a new one in with some JB Weld

The connector on the CH is a Deans and the one on the RCEXL is a Futaba. Just patch the wires to make whichever plug you want to use work. The wires are the same.

Get the correct side of your new sensor next to the magnet!