Yes , the same place. It became Winn just a few years ago, I have purchased a few cars from Cormier.
Cormier was just over the channel from Lions drag strip, and also sponsered race cars. The Green Hawaiian Dana 427 car was purchased from that dealership before being sent to Dana for the conversion. ( BTW The Dana dealership was just a few miles up the long Beach freeway from Lion's drag strip)
I contacted yesterday via Facebook to the dealer and here is the answer: Hello Veli, Let me check with the records department. Your restoration projects looks very cool. I will be in touch next week. Thanks
So, let's see if they have any information left from that period. Since I live in Finland (Europe) data collection is a bit tricky ..