[Walt Fricke]

When you get your engine apart, just measure the rings before ordering. You can confirm Alusil (magnet won't stick to inner cylinder surface) vs Nikasil (magnet will stick).

But how would the stamped engine number end up not being proper for the case number (and the case casting number, as well as the direction the distributor rotates, the fact that it is a reluctor and not a points system, etc etc)?