I'm not sure why GMH reverted to mechanical dizzy for the turbo, the Jap 4zc1-t engines are the same though. We only get Jap imported Piazzas in NZ but I though the Aus ones were pretty much the same? I've got a Mitsi CAS in my shed which is similar to the one you describe except the slots get longe...

I own 2 g200ws from Piazza's and both are optical. I'm pretty sure all Piazza g200ws are. A guy running a 4zc1-t in a Gemini over here in NZ has modified his 4ze1 dizzy by blocking up all of the "360" holes but leaving one open before the #1 (4 hole) slot, which gives a "reset" f...