Like the CA18DE's that came with "Direct Ignition Systems" that uses coil wires and a central 4pin coil. Looks much more robust than the Coil on plug systems we got.
Then there was the 4WD CA18DET, presumably form a U12 bluebird. Complete with 4Wd tranny. Would make a great 1/4 mile car in a B12 chassis (hint hint PFB

Pity it's transversly mounted else it could have made an interesting 200sx.