There is more then one type of Permatex Ultra Black, make sure it's the one that says "gasket maker". If you have it on hand I'd go with it. Make sure you let it cure for the set amount of time and be careful with those little hex screw that are located near the center part of the breather covers. I believe 2 on the right side and three on the left cover. They're made out of soft aluminum and are prone to strip/break if to much torque is exerted. Good luck, let us know how it works out.