You can just order one that is one stage colder. Ask the owner of RS25.com since he had one on his car. That or it was one of the guys at scoobymods.com that had it listed. They actually have a OEM part number for it.

 

You can take your old one in and match it up with some thing they have.

Zerosports has one 175* I think the stock one is 180* but that's just what I've been told, most auto parts stores sell 160*,170* and 180* but if your running the stock ECU the colder one's can mess up the fueling because the ECU will run the warm up maps all the time, wich is why people pay the $75 bucks or so on the Zerosports one.