i am looking at guying the hardin valve covers that are tall and will clear my gills. they are not drilled and have jus the oil fill hole. what do i ned for crankcase ventalation? to i need to drill them and run a hose to them from the carb, do i need just a breather? what so i need to make these work and not screw anything up?

You'll need to either drill them for AN fittings and plumb in a puke tank (one hose for either cover to a single tank) or get a pair of the Teague (or Hardin?) Tall breathers and drill your covers to fit them. Easiest way is to add the tall breathers, but you'll deffinately need something!