If you find out you've got a good port job, I'd stick with the 35mm...maybe 33mm. If you're ported I really wouldn't drop down to the 2 into 1. I've got the 2 into 1 now w/ a 34 mm PJ. If you don't have a port job and don't plan on getting one any time soon, I'd definately look into the 2 into 1. My top end is in Eric Gorr's hands as we speak...and I'm debating on going back to two carbs. Don't get me wrong...I love my 2 into 1, it's easy as hell to tune, and the thumb throttle isn't so damn stiff. But I don't want to sacrifice performance to save me a couple minutes jetting.