That's not what I said. I said that a Sprint Car cannot be a 350 2 bbl, and cannot be a 400, therefore IF a dataplate says 3H and IF 3H means Sprint and IF the car has a 400 engine, then either the engine is in the wrong body, or the tags have been changed. If you can prove that the tags and engine are both correct for the car, then 3H CANNOT mean Sprint. It will take more research to determine what it does mean.

My car has a lot of documented factory options that are not on the data plate. The plate wouldn't be big enough.