i have buy the race porting  template on ebay from this guy year ago, it is not easy to do, you will need to bore after the job done... i used with 38mm mikuni TMX carburetor, fmf pipe and , boyesen rad valve system. The power output is amazing compare to stock bike. i loosed a little bit of low end but it fly like a jet lol  there the dyno result, the result was better than expected.