well the '05 up forum is a little bit sleepy...but on our cars, we have two aluminum plates right underneath the intake runners on the manifold. these plates house a butterfly vale in each port. it's the engines torque management system..sort of. well, i'm am taking out the butterfly valve and motor and looking for a compound to plug the holes in the plates. obviously right above the intake ports won't see any high temperatures, but better safe than sorry. hopefully you guys know of anything. hell it could stand 900 degrees or a little less. just looking for a compound that will withstand vibrations and temperatures.
If you have the plates off the car, take them to any welding shop, they should be able to close the holes in 5 minutes for pretty cheap. Then you can grind down the welds and make em' pretty. Or they'll grind them down for you, for a few more $$.