its way to far for me to go, but i will help ya out with some questions i have asked when buying a 620. these questions will help when taking pictures too.
how are the floor pans?
what shape in the bed in? specifically the front edge where the front wall meets the bed floor.
what carb is on it? Weber, Hitachi (factory), SUs (or other side draft carbs)?
any custom work?
these are all things i like to ask when i buy a 620. rust being the main ones.
good luck with the sale. i miss my KC every day, but swiss cheese had less holes.
1973 Datsun 620 4spd, 1973 Datsun 620 5spd, 1978 Datsun 620 KC being parted