What is the better filtering system for a 78 2F in dusty conditions? I'm running it in a 66FJ40. I have an oil bath air filter that I can fit up,(already have the brackets in place) stock 78 style air box or could go to a k&n type system. I've also thought of a snorkel just to keep the intake up high and out of most of the dust...they look cool too! Pro's and con's on breathability vs filtering capability? Thanks!