lets talk pan gaskets and rear main seals

You can get a standard Fel-pro gasket to seal, but here is what you have to do.
Make sure the flanges are straight.
Use a light coating of permetex on the cork, and end seals. Use rubber gloves and make sure every surface is covered.
Before putting the pan on make a 1/4" bead of the corners.
Do not use the factory torque settings, they will distort the gasket, just run them down to about 1/2 the recommended torque.
Let sit 48 hrs before placing in service.
You will not have a leak.