My riding buddy has a piped & filtered YFZ. I used to pull him pretty bad with stock carbs. Ive just recently switched to Trinitys CV single 35mm kit and now he's walking on me in 5th gear at the sand drags.
That 15% topend power gain over stock trinity claims is crap, but the 20% gain in the bottom and mid is no joke. Like Ken said, a single 35mm makes for a great play setup, but youre gonna be in the back when drag racing anything longer than a 100 yards.