I didn't think there was a gasket between the transmission and Tcase?
Theres rubber O-ring(thats actually a square ring) but I have never used a gasket. Just right stuff the hell out of the oring and mounting surfaces and put them together.

Theres rubber O-ring(thats actually a square ring) but I have never used a gasket. Just right stuff the hell out of the oring and mounting surfaces and put them together.