I'm planning to fit an Electromotive crankshaft position sensor to the engine side of the fan belt pully. I'm yet not totally sure that it will fit between the pully and the timing cover, we shall see.
Dave Theen (firstname.lastname@example.org) has such a device and an electromoive ignition system attached to his race car. His engine has a cam belt conversion so hopefully the wheel will fit to my engine with a cam chain and associated cover. Thank you to Dave for sending this picture to me: