3\" or 4\" snorkel? what size of PVC should i use for my snorkel? I want to use 3" but i was wondering if it would be choking the engine? I talked to THUMPER & he used 3" on his ( http://coloradok5.com/photos/showphoto.php?photo=2336&password=&sort=7&thecat=998 ). buy the way everything under the hood is stock, no highflow heads or 1000cfm carb.