Unfortunately, assuming you mean buckets and not the Strato Bench, they are unique. The pattern is unique plus the pleats are done with heat. You can get a shop to custom stitch something that 99% of people would not recognize is not identical though. It looks original but the contour of the pleats is the difference.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
Ouch, this is a wake up call for me. All my upholstery is still sitting in a spare room since 2014! No point putting it in the car as it still sits outside due to lack of storage space.
Ok, I was wondering about your interior as I looked through that link. I didn't recall ever seeing it finished. Those covers you had made sure looked authentic. Are you willing to say what that cost to have them made?
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)