Pat, Eagle Tree also has a K-type thermocouple and extender module for the FDR. It comes in two flavors, one for EGT and also one for CHT. The CHT comes with crimp on electrical connectors sized for putting it under spark plugs and the EGT comes with mounting hardware to put the probe into the exhaust pipe. You can use both EGT and CHT with one extender module as it has two connectors on it. The K-type thermocouples are available seperately.