We arent too worried as to the actual punching out of the holes since dad is a machinist with his own business... but the question must have been worded wrong. our covers are exactly the same, we didnt want to have two fill caps and we were told that the pcv valce did the same thing as a breather cap (release the vaccum/pressure) except the pcv valve utilized the pressure by sending it the the brake system. the question is... is a pcv valve to hook our vaccum line to and an oil fill hole all we need????thanks
brett