Well, this thread certainly has veered off course.
There are something like 4 sets of spikes for these saws. Regular and west coast in both large and small mount bar models, so it gets a bit confusing. I probably have everything but the small mount/west coast stuff in stock: I'll check on Monday.
One of the things that is confusing is that the leading edge of the side covers of the small mount saws such as the 2260 and 555 sit further back than the 562 cover does. The outside spike on those saws must then be larger as it's mounting point is further back than where the inside spike is bolted into the crankcase. So they don't look like a matching pair as do the 562 spikes. I've gotten the outside 2260/555 spike for guys and they look at it and say, "Hey, this is wrong", until they actually mount it.