There are no major restrictions after surgery. In the early time after your surgery (1-2 weeks), be sure to chew your food well. Avoid spicy or adventuresome foods until your intestines are functioning more regularly.
Here you will find scans of the original wiring diagram for the 1971, 1972, and 1973 Datsun 1200. 1971 Datsun 1200 Wiring Diagram. 1972 Datsun 1200 Wiring Diagram. 1973 Datsun 1200 Wiring Diagram.
The cooling system flows in a traditional way on the LS engine, unlike the LT1 Gen II engines. Any older heavy duty radiator or aftermarket LS specific swap radiator can be installed with recommended high performance electric fans. The common trick is to install OEM units from newer cars.