The 370z uses a 180* T stat iirc. The mishimoto is like 150* when it starts to open.
I'm not sure if this will work on the 370z...
But on the Titans vk56 we have found that you can use a Nissan OEM 300zx twin turbo T stat which is 170* and cut the cage off of it, and it drops right in to the T stat housing.
Might be another cheaper option to look into.
This may yield a consistent 6-10deg (or more) operating temperature reduction vs stock engine coolant temp.
Nissan OEM 300zx Twin turbo 170Deg Tstat Part # 21200-42L01
cage is cut from the bottom.
