I want to do half of the 'Power Up' mod. I will remove the intake snorkel & rejet. 42 slow jet 112 main jet I do not want to remove the exhaust baffle (concerned about noise). Do I need to replace air filter w/ uni-flow or twin-air, or does stock flow enough w/ snorkel removal? Is there any other mod required to the airbox? Also, how do I know if I picked the right size jets? Can someone point me to a link on how to dial in these carbs? Thanks!