The NAPA t-stat is not likely the correct t-stat, it will not have the small flange on the bottom, visible in the below picture.
BUT .... the proper thermostat is available from Marlin Jack. Marlin is a Pantera owner and a machinist. I recommend giving your thermostat business to Marlin, not to the businesses that hoarded them.
Marlin on eBay
Marlin's email: pantera1974@verizon.net
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