Really? They must have changed it for the Alfetta then. 105 -115 cars definately used hex head screws with a 3mm socket (I just went out and checkedalfa used phillips heads. a PO may have used something else. 2 in rear, one in front.
bottom shroud falls off after removing 3 screws. Top shroud does not come off easily unlesss you remove the pinch bolt. don't force the top shroud. It will crack.