'70 Swinger Hood Scoop holes

I have the DMT hood seals as well. Jim at DMT does a great job, they're awesome parts and he has great service. They're nice and tall on the top side to keep water out of the holes, unlike some generic seal intended for something else.

For the hole saw, I just used a bi-metal 4.125" when I did mine. This one's nicer than what I've got, and by the time we shipped it back and forth you could have bought this one.

Starrett DCH0418-G HSS Deep Cut Holesaw, 4-1/8" (105 mm): Amazon.com: Industrial & Scientific