Originally Posted by 1FUNVET
Use the 2" bung and you will be fine. I used PVC for exhaust stack on mine and painted to match my LSU drum.
What he said.
There are lots of examples of people just using this and I personally know two who use just that.
Four 3/4" holes would be just like the weber so that would be fine instead.
Just keep in mind you'll want to keep them covered up from rain, whatever you do.