I found a truck in a farmers field and went to talk to him about what he wanted to sell it for. He told me that he parked the truck there in 2000 and its been sitting there ever since. He also said when he parked it that it was burning oil like mad and he would be grateful if i just took the truck off his property. So i took it home and after unloading it i put a battery in it spayed carburetor cleaner into it and gave it a crank and BOOM it fired (You got to hand it to the Japanese when it comes to build quality). The truck burns oil real bad. I pulled the motor to rebuild it but there is just so many signs that this may not the original motor
I am hoping to get some help identifying the motor before i purchase the rebuid kit. The truck is a 1979 Datsun 620 king cab The block has U95, 89152, and M2 stamped on the block. The head has an w53 stamp on it. The plate on the fender says l20b. It has an aftermarket 2.5-4psi electric fuel pump and a plate where a mechanical one should be. Also is that the correct fuel pressure.
I would appreciate any and all advice