throttle body
Stock is 52 mm I believe. Why are you so set on getting a 65 mm TB? A bigger TB doesn't mean more power if you already exceed the limit of what the engine can bring in. The RRM TB is fine for their 300 hp drag car, I'm sure it'll be enough for your car.
That doesn't mean more power. If you hook a giant 100 mm TB to your car, it'll be impossible to drive since it'll lose the pressure advantage that keeps the air moving into the engine at a high rate of speed. Imagine trying to drink something with a 2" pipe for a straw. Theoretically you could take in more fluid with a giant straw but in practice it's so big you can't create a suitable vacuum.


