Brian very interesting, it looks like you have a threaded plug in that front hole, where mine doesn't look like it has a plug. I bolted the intake back on the other day just to keep track of everything so I can't go check if mine has that plug but the picture is hard to tell. Another interesting thing is the hole I'm talking about is just on the other side of the valley from the plugged hole on yours and it looks like you have a casted hole where mine looks like a defect hole. I'll try to blow the pic up.