I realize you already have yours back on but someone might benefit from another process in the future. I used the same gasket as Tony and installed it on the car from underneath. I didn't use any sealers or studs. I purchased some Permatex gasket adhesive and applied it to the bottom of the block and let it "tack off" then just put the one piece up in place on the bottom of the block and raised the
oil pan to the block and installed the OEM style bolts.
John