Nice car but it is a basic GM 1966 2 door hardtop with bench seat interior and low options (no buckets/no console, no power windows, etc. Properly marketed I think you can get $10,000 to $12,000 but the market for your car is not as large as the muscle car crowd.
And the muscle car crowd for 1966 wasn't as much as 1968-72.
Get the car out there - ebay, Craigs List, etc - you need to find an Olds fan who wants to add your car to their collection.
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Bryan "Jake" Moran