Where is the block's part # is stamped at???

Stang_ROTY---Where exactly at on the bottom? I have a 69 Mustang but my car had a 302 2-bbl originally so I need to find out what year my engine is. I think it's either a 69 or 70. 69 was the best year for the windsor, wasn't it?

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'69 Coupe with 351W
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Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Edelbrock lifters, Edelbrock double roller timing chain, Edelbrock valve springs, Accel coil, Moroso Blue-Max wires, Hedman headers, 2 1/2" pipe, glasspacks, Flex fan, Lakewood traction bars, C4, 3:1 gears, 290hp-stock heads
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The Surgeon General didn't say anything about smoking your azz!!