Lots of old school thinking here for sure...FWIW mine are 115 and 117 respectively and they seem to make pretty good power. Both NA deals. I think lobe separation is one thing some of the old schoolers just seem to reject. Cannot tell you the last time I was at less that 113. From what we have seen it seems to be way less peaky power bands going with and increased lobe separation. But you can always just run an old purple shaft and wonder why some are faster....