I thought some company in Austin made an SC for the 3.3 liter nissan engine... someone posted about it somewhere around here.

And, yes, you can put an SC on anything you want to... I use mine all the time driving to work on I75 (see my sig).

Don't be suprised at the gas mileage hit and extra expense that running super unleaded brings however.... especially if you live in Canada or California. I'm enjoying $1.45 a gallon for 93 at Sams right now, to be sure!