so since my car runs a 195 tstat, I should get a thermo switch between 205/215 and 215/225. Apparently, because auto value forest lawn uckfayin rocks and they have mountains of old books, a GM 25037089 is a 2 wire bladed thermo switch with a 3/8" NPT connection that operates over 210/219. Otherwise known as TS217.
This is not available anymore:( but it is listed as in Chev 87-83 and pontiac 87-83 theinternet tells me that this part should be in a firebird 82-91, transam 92, or camaro 82-92. The old dudes memory says "in those ohh 2.8? 2.0? pontiacs and chev s series? maybeee a sunbird, citation, or a celebrity, something like that. Yeah, look for those small engine front wheel 80s cars".
So i might do a trip to PnP later this afternoon.