Originally Posted by SteveSRT8
If your 6L80E has the factory rubber gasket do not damage it. It is very reusable and much better than the cork cheapies...
+1, I remember in the old days the first time I had an experience with a 1-piece 302/5.0 pan gasket, compared to the half-moons and cork strips. Not only was it super simple and no leaks, the rubber gaskets most always have metal grommets in them to prevent over-tightening the bolts. Be gentle, take your time, and save yourself cost and leak potential by reusing the factory rubber.