ok guys... im going to snorkle my 4man out this week. what is best to use? spa flex or pvc? the spa flex looks much much easier to use but can it handle the heat of the engine? and when connecting it to the airbox, what do i use?! i bought a shop-vac hose kit and it plugs into to the airbox but i dont see what to do after that? any help or info would be great! and i know you guys are the ones to ask. thanks!