How interchangeable are 318 harmonic balancers?

George Jets said
Can you show us the Damper's crankshaft keyway in relation to the TDC (top dead center) mark slot?

So we can look and compare to what we have here, to guess > see if it has moved?

View attachment 1716118802

☆☆☆☆☆

I'll try to grab a couple photos of it when I get home this evening. I'm supposed to help my wife with a couple things after dinner, but.....

:lol: