This engine came out of my 1970 Datsun Z that was a daily driver till it was totaled.
E31 head that has 5000 miles on it. The head was freshened by the machine shop and updated with hardened parts for running unleaded fuel. Still looking for the paper receipt.
New timing chain and kit installed at time of head work.
The engine ran when it was pulled from the car. It did smoke a little on cold start and hard acceleration, needs new rings or the bottom end refreshed.
It is missing the distributor in the pictures but I know I have it on a shelf.
I can take more pictures, just let me know what you want to see.

Local pick up.