If your car is stock or even slightly modified, the stock clutch is more than suffice. I run a stock clutch in my 330 and can go a season on one. Remember, make sure you get the correct clutch centering tool. If you buy the clutch kit from the dealer (or an online retailer) it comes with everything you need except for the centering tool. Follow the instructions on how to install the clutch and you'll be fine.
So far, my personal record for changing a clutch as the track is 45 minutes (this is with a helper) and 75 all by myself.