I agree that you would likely have to go back to the '70s in order to locate a car without much electronic equipment.
However, the '70s were also the era of a whole lot of cars that did not run very well, due to the emergence of pollution controls that really strangled the engines and resulted in lowered power output and bad overall operation of the engine. I had a '71 Charger that was both reliable and durable, but if it had been made 4 or 5 years later, it probably would have been a real dog.