Honestly, one of the best mods I bought. I have an actual water temp gauge, and it dropped my hot coolant temp from 210*F to about 170*F. That's like after an hour of bagging on it. A wicked good investment IMO. Corksport is cheapest, but if you phone Ken at PG they'll match the price. CS is great though, they have tons in stock. Even on a mildly built car, running cooler is ALWAYS a good thing, it is expensive for what it is, but really, I would def. reccomend it. Trust me,it's one of those things that when you get it, you'll love it too and be all like "why the **** didn't I get this before?!?"