I had purchased what was supposed to be a NOS Kanto Seiki 240z ignition because it has the original steering lock buzzer wires. Turns out it’s either for something else or they increased the diameter of the steering column somewhere along the line.
So since it won’t fit, and since it took the same key as my door locks, I scavenged it.
Adapting the cylinder and switch to the later style housing was easy. It didn’t just drop in, but it was close. I rekeyed the cylinder with wafers I got from @inline6 and put it, the wires, and the buzzer switch into the aftermarket housing that came with my car.
I was able to get a key made from the door lock code by a place in Australia called Keys4Classics. Super simple and not much money. I almost bought a rekeying kit off eBay, but I didn’t feel like spending the $80. FYI, the retailers that say they can sell them are just drop shipping them direct from ASP. I reached out to ASP directly and they said they can no longer make complete kits.
The aftermarket lock cylinder uses pins and the asymmetrical oval key.
The NOS lock cylinder uses wafers and the double sided VOSS key.
Once everything was in hand it was about two hours of work, most of which was figuring out how to do it. The housing had to be drilled so the pin that connects the cylinder to the switch could pass through. I tried to mix and match the internals but it was sloppy and didn’t feel good, so it ended up being all of the parts from the NOS ignition inside the aftermarket housing.
So now all my locks work off the same key… except for the glove box, but I have the wafers to fix that.