Wow, nice site. Going to take me years to figure out how to use all that info. Just to save me all those years and the possibly the motors. Which are in a scrap yard waiting to be chopped up. Any idea what these numbers mean? These are on the plate next to the distributor on each motor. F203JC, and F1030XTA. Looks like both were made in Flint, Mich. Bought as far as I gone so far.