Have a predator 212 that I'm doing a stage 3 on and a 420 im doing a stage 3 on. But I've been reading alot about the aftermarket billet side covers and the vent tubes that come standard. Im poor so I wanted to drill and tap my factory covers for 2 ports on each. Question is how do I plumb the hoses and do I need a pcv valve , check valve or catch can as well? I also read i need to use at least 3/8" diameter hose as well.