FEL-PRO Perma Dry pans gaskets work fine. Use a dab of RTV silcone in the corners. Get them online or at Napa.
Best advice I can give is to pull the pan and let it sit overnight, or even better, for a couple days, allowing time for the oil to mostly stop dripping.
Oil dripping on your face and head is the worse part of the job.
Cover the floor under the engine with several layers of old cardboard.
Wear old clothes, they will get very oily.
Be careful not to scratch the main journal, use only plastic or brass tools to punch the old seal out. I use brass brazing rod.
Don't touch it with anything made of steel!