Sorry to revive an older thread, but this proves that I legitimately have so much to learn still (I always will). I spent about the last 3-4 hours wracking my brain trying to understand everything being discussed here. Though it's still surface level, I kinda understand this now. Using this plus an old formula to find spring rate, I managed to shave almost 4 seconds off on Suzuka with the new 992. Stock setup on both runs with the exception of some tuning to the diff. I'm excited to see how much more I can extract from this car once I tune the dampeners and and refine the diff!
Thanks to everyone for sharing their knowledge and to Nenkai for everything he's done + the spreadsheet.