Okay, would raise a few eyeballs at the local cruise night but, that allowed for, if all that is different is the angle at which the plug enters the combustion chamber, and the chambers and valve sizes are the same size from cylinder to cylinder, and there are no other variations in the basic design, then I personally don't see the problem in running them. You'd need an engineer to explain the benefits of one design over the other and one of them, I ain't. Not even an unreasonable facsimile.
However, if the combustion chambers did get measured and they did happen to CC out differently, then NO, no match, time to return to the search.
Nick