might have studs on the front/rear ex port holes and bolts on the rest. Will need to split the ex pipe and take off the inside bolts/washers and the nuts/washers off of the front and rear stud then remove the ex manifold. (dont forget to drain the coolant down a bit). If the ex man cannot be totally removed WO r&r ing the ps box then see if it can be moved over enough for you to R&R the head. EDIT the front and rear bolt holes (only) are wet (SB)