IMO, the only way to find out what car this engne actually came from would be if the number was registered on somebody's database. Somebody like Galen or the Dart or Barracuda registry. You can narrow down the possibilities by simply eliminating the models that the 340 wasn't available in during the 69 model year. Cross off Roadrunners, Satellites, Chargers etc. and you'll find that the A bodies are pretty much the only choices left. You gotta remember that in 69 the sequential build numbers from each plant were for the total number of cars built there, not just one body style. Therefore, this car COULD have been the 700,*** car built at Hamtramck as that includes taxi's, fleet service cars, etc. Hamtramck and Lynch road were the biggest plants in Moparland back then, so 700,000 cars was not that much of a stretch. Late in the model year to be sure though!!! Were Dodges built at Hamtramck??? I thought Dodge was Lynch Rd. and Plymouth was Hamtramck!!! I could be wrong on this though. If you find that needle in the haystack, look for the map to the pot of gold too, as that is just about your chance of locating info on the car this motor came from!!! Good luck, Geof