I can't Find The Correct Thermal Vacuum Switch Chevy 350

[Cadillac Kid]

^^^Not sure what you mean by that sir??

I bought a new T stat housing awhile ago for my truck because the original was cracked. I looked at thermost housings online for early 80's 350's and they have two threaded ports on them with plugs if you dont use both holes. One of the threaded holes looks like the correct size for the new (TVS). I guess I'll have to buy one of those to make it work with the new vaccum switch.
Makes me wonder why they would sell you a thermostat housing (like the one I bought) that you can't obtain a proper thermal switch for? Oh well..

-Gavin