I have an improved racing oil cooler thermostat. This is the high quality improved racing version. I had it installed in a 2008 escalade. The car was sold, and I thought I would use this in another vehicle, but ended up not needing it. The specs and a link to all the info are below
EGM-114-T6
1 x LSX and LS Oil Cooler Adapter with Thermostat
Rear Sump
200ºF
2 x RaceFlux -8AN O-Ring Boss to -10AN Male
Flare Adapter Fitting
OM-08-10