At this point, I have no thoughts of being a mechanic; however, I told my son he should definitely give it a whirl. He is 17 and chose a non running "dream" vehicle as his first. Everything being done is his $. Our mechanic is trustworthy and all techs for datsun's ask for 300 just to look at it. I am the researcher.
Info that you asked about, it just dies. The longest it ran was five minutes. Fuel filter, pump, afm and hoses, cold start valve, just bought ignition coil and a part that I thought was the one pictured but it only has one wire and a larger cylinder.
As for gas tank being an issue, my mechanic did bypass the gas tank and results were the same. Being that it sat for a long time, we have been using premium gas during trial and error. I will say we have a mechanic younger than vehicle. With that being said, his father is a mechanic as well and enjoys working on it.