Found some more info here.
http://www.astinagt.com/forums/showthread.php?t=3406
The 2.5L probe engine is the same as the ones in the MX-6 and has the KL
ecu. I'm not sure about the numbers though in the rest of the
ecu number.
KL - V6 piston engine/2.5 litre
Mazda MX6
Mazda 626/Capella/Cronos/Efini MS-6
Mazda Eunos 800/Xedos 9
Autozam Clef/Efini MS-8
Ford Probe
Ford Telstar/TX5