Hey guys. I'm trying to make an accurate CAD drawing of the Daunltess harmonic balancer. Since I'm so far into my build I didn't want to pull mine off, so I sourced a spare one from a member here. The issue is that the spare one has smaller holes around the circumference of it than mine. Spare: Mine: Can one of the parts-gurus tell me if these switched over the years, or what goes to what engine? 225 versus 231? Are there any notable differences between the two that might not be obvious?