Who all is running a cometic gasket? How much boost will it hold? And how do you like it.

 

There are numerous threads on here and a couple of the other forums. They are still new to the Cummins world. Dusty Hawk says his Cometic MLS has seen 90psi.
Do a search on here and on competitiondiesel.com, there is a thread going on now in the 12v forum.