Got it started last week, after having the carb overhauled. Either the fuel lines are plugged/rotted or the pick up in the tank is. Added fuel to tank, nothing produced, but once i hooked a gas can and hose to the pump, she started right up.
Will need new contacts for starter & get a new ignition switch wired in, the toggle switch and door bell starter button is not my style.
http://vidmg.photobucket.com/albums/v512/onemisledyuth/Datsun%20521/A108AAEB-5E0F-46A9-9B83-00FE66E4B321_zpscleeus8f.mp4
Click link above to link to 15s video