Check out my "How to Buy" page and thoroughly read all the other resources linked from this page, especially the articles on Corrosion so you'll know where to look for rust:
http://www.banzairunnerpantera.com/how_to_buy.htm
Also, see if you can find another local Pantera owner to go inspect the car with you. You'll learn A LOT by inspecting a Pantera with someone who's knowledgeable on Panteras, and two of you will be able to inspect the car more thoroughly than just one person.
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