Ayup, slow night. The evening get together is over.
I know of 3 Thermostats.
Porsche (Behr ? sp)
Troutman
Mocal
The first two are hard to go wrong with. Internal passageways are not the restrictions, rather it's line size (fittings, actually)
Bigger is better....12AN minimum, I'm told. That's what I used.
I think they all open at approx 175-180 deg....I tested a Troutman and it was fully open at 212.
Mount as close to the motor as practical.
Tricks?....Buy a good one, use good stuff on the lines, fittings & cooler. Pressure test the lines before install. I used 120lbs of air
& sprayed with soap & water.
yo, ho, ho and an effin' ho, Merry Christmas.