Ant ~ my 1st cobra SPF1299 had a heater that I never used......well maybe once on that 29 degree day. In fact I never even had the top on that car.
KMP297 does not have a heater but at least it does have a top (just in case). I agree with what DougD says about the motor putting out enough heat in the cockpit.
Here is a pic showing the door ferrules
