The 4 around the water pump hole (circled in photo post 3)
I would do one bolt at a time as each bolt, clamps the water pump to the timing cover and to the block.
VERY IMPORTANT...
Be sure the bolts go back into the same hole they came out of. If those bolts are too long they can and have cracked the cylinder walls of the front two cylinders. A stiff wire like coat hanger, inserted into the bolt holes with all the accessory brackets installed can verify what the max length can be.