The Permatex #2 is what I am going to use, the original gasket was a metal laminated type and was really glued on, had to use heat to soften it and separate the unit. I'll just apply a little of the #2 to the threads. Hope to have the new pig installed today, Friday.

1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy