Did you try Energy Suspension at http://www.energysuspension.com ? I am attaching a picture, they are not aftermarket junk, they are quality polyurethane mounts integrated into a steel frame, that will outlast rubber and have better suspension action. You can download a copy of the Energy Suspension catalog. They show a listing for a 1966 Chevelle with a 396 engine, which would have been a Turbo 400 transmission. It should be just like your Caprice mount...

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