@oldchevytrucks, Find a flaps and try them before you order on line! I know it seems like a hassle, but the oldest auto parts store you can find the better. They are still in business because they have been doing SOMETHING right for years. Failing that take the old one and try to match it up. I am willing to bet that other Chevys used the same part for years!
Best wishes and good hunting,
Les
