Hi Jack, I hope all is well.
Oddly enough there are no port dividers in the runners and no pop off valve....
The bolts go in the “void” area below
the blower but outside of the plenum.
The port dividers wouldn't be an issue I don't think. The heads will do that. But no pop off valve could be a real issue. The bolts would be ok where they are as long as you can get a torque wrench on them.
