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I'm curious what the answer is to the 10T vs 8T question. My guess would be that they're not interchangeable, but you never know. I certainly wouldn't mount it as an experiment. When I replaced a Bosch with a Valeo, I didn't notice at first it hanging up on the neutral switch, so pay attention to that.
OK present day.. The end cap that mounts in the flywheel hole is cracked.