I haven't tried bolting it into the case but I did install bolts and nuts through the mounting holes around the perimeter and it still leaks real bad. The bolts help a little but I don't think it's nearly enough. Air just pours out. The crazy part is laying a good straight edge on it I can't even get a .001 feeler gauge under it nor can I see any daylight under the straight edge. I may try pouring some atf in it and see if that slows it down any.