Fix or sell as is?

Hmm, call up a few PDR guys and see what they'll charge. Sometimes they wont even mess with old cars because the steel is too thick compared to what they're used to doing. It's a nice car so I'm assuming you're going to be selling it for around $10k or so? If it was a $5000 and below car I'd say leave it. Since it's nice, I'd get it fixed depending on what they'll charge. Assume a buyer will probably want you to lower the price another $500 because of the dents.