I cut a hole in mine with a hole saw not using the center drill bit. Dont quite cut all the way through so you dont get shavings in the pan. Stop drilling just before it breaks through, then using a screwdriver pry out the piece and break it off using pliers. Then what i did is weld a bung on without pulling the pan, not sure why everyone thinks you have to pull the pan to weld on a bung??? If you can reach all the way around with your welding torch or mig welder then I dont see the need to pull the pan. After the bung is on you can use a nipple of your liking.
95gt Dart block 363, TEA 205 Heads. 78MM Turdblower Custom cam, All fab work done by me....Moates tuned by me, AODE done up, yep I got overdrive. Drag radials, 327 rear. Next setup to come over winter...lol