We disagree.
They used it because they didn't know any better, it was available, it fits, and it appears logical ("A, therefore B").
The design factors differ quite a bit between the 2 engines, especially as to length, stroke, counterweight placement, number of mains, and journal sizes. Other than the brand and firing order they're not very close.
This means that the dangerous RPM points ("orders") in the engine where destructive crank harmonics occur will not be at the points the damper is tuned to "see", they'll be above or below. Prolonged cruising at a critical RPM causes breakage if not damped.
It's not going to blow up, and it's better than none, or a know-to-be-bad original.
It's just not as good as the correct damper.
