That's the idea, so I hope to be able to say YES. The DZ-Start order of 20 is the first of it's kind for the Datsun (specifically) and so this is more of a Tester run. To see how it goes, the interest it draws, difficulty in building, assembly and shipping, etc, etc. If the battery, starter and ignition switch have all been replaced, then the only other option is weak wiring or connections. I would follow the Black/yellow wire from the ignition switch to the starter. removing connections, squeezing them a little for a stronger bite when you reconnect them couldn't hurt. You might want to think about a Starter Assist Relay for your 260Z. It's a basic relay that mounts near the starter, below the battery and uses the starter wire as a signal to transfew a full battery current to the starter solenoid. You can find them on eBay or I can make you one. I found one on eBay from a Bad reputation seller, but I can make one for you for the same price and it'll be WAY BETTER and actually Designed for your 260Z. LEt me know if you're interested. Dave