Originally Posted by LRover
it is the oil supply to the rocker shaft. Do not block it! It leaks because it is under pressure, not draining back to the sump. You will either have to find a tap to clean up the threads or have a machine shop re-tap the head and possibly install a different type of line.
Thank you for the clarification. After spending about 6 hrs worth of fiddling, I was able to tap the holes and fashion my own banjo bolts (this took most of the time). I am happy to report the leak has stopped and the supply line in is working order.