well i have looked and looked. i do not see anything anywhere on that engine that has TDC stamped. on the bottom of the engine i see a scale that has marks including 10 and 20. this is lined up with a 2" long tube i referred to earlier. the pulley in question shown in the picture has stamped wedges in it (4 of them 1/4 each) these wedges only stamped in the front half of the pulley not a complete alignment mark as pictured.