As peterlocal22 said check out my sig. As far as the carbs I wondered the same thing, recently a guy on here did a bunch of dyno tests and what not and he was able to prove that twin kehein 28mm carbs had the same low-mid power, but more mid to top as a 2 into1 35mm kehein set up, I personally have found that the stock carbs work great for a trail ported stock stroke motor, just get them dialed in. Stepping up to 28mm gives you a little gain, but not enough to be worth spending $300+ on a new set of carbs, just get a T.O.R.S. removal kit from Jeff