there is a freeze plug in the rear of the head p/n: 901271817
engine block has several freeze plugs different sizes
timing cover and intake and exhaust will have to be removed to access areas
sizes are not shown on parts diagram, just general locations
2 of part number 900542813 located on each end of block
2 of part number 900281820 located on each end of block
4 of part number 901271817 located on either side of block
2 of part number 901271816 located on side of block
2 of part number 901015826 located on side of block