I looked at a bunch of different methods on the Tube, and settled on melting.
I searched for a can around the house that was 4". In my case it was a stainless steel cup I use for camping. I heated it up on the stove for a minute and with an oven mit carefully melted a port hole in just a split second. Worked like a charm.
Is it ok to port the head while its already on the has drum?