There are only two seals as you stated, one on front of engine sealing cylinder head to cylinder barrels, and one next to starter below carbs sealing cylinder barrels to engine block. Older seals are barrel shaped and silver or green in color with slack in wire rope while new seals are square in shape, red, orange, or purple in color with no slack in wire rope. If you have older seals, you can ship engine to USLC to have new seals installed. Hope this helps!
