Best 180* Thermostat Brand

I know this has been asked b4 but search came up empty. I have read for hours and it seems like 180* is the most recommended temp. I would like to get a very high quality T-stat to replace mine. Mine seems to be a 160* based on the Autometer Gauge but it may not even have one. This car was a drag car converted back to street. I have no problems but I just don't want to run too Cool and cause engine wear. I only drive my Dart about 500 miles a year to local cruise ins. 318 Engine.

I would get a genuine Mopar T-stat but when I go to the Dodge Dealer they say they don't go back that far on their computer.

If The ones at parts stores are any good I'll go with that but I don't want to create a problem.

Thanks for any advice.