I'm not going to run any type of platinum plug with the supercharger. Thanks for the head up about Nology, I have heard similar complaints about them from others with the exception of their coils for other applications.

According to the NGK part finder the stock replacement is PFR5G-11. I just ordered a couple boxes (4 per box) of PFR6G-11 which is one heat range colder. Sometimes these colder range plugs are not readily available at your local auto parts store.

Here's a link to an excellent how-to on reading NGK plugs and another to a plug x-reference chart. I swear by NGK TR6 plugs in my supercharged Chevy truck.

Reading NGK plugs
NGK Plug Cross Reference Chart

I still need a part number for a low temp thermostat. Sounds like installing one after the s/c is in wouldn't be very