interesting. I guess I read the articles wrong. The way I read the claims was HC had higher spring rate over the scat but the articles just state its a high spring rate over same model / previous years. Makes sense now. Interesting though that the HC would have a softer spring given the increased weight on the front end. I need to reach out to Eibach and ask about the above mentions R&D.
Edit: I love forums. FB is killing them and all I get on FB pages is a bunch of nothing or even worse, trash.
Only lower the front end, you get a little over half of the overall cg lowering effect, better downforce, spoiler gets lower to the ground, increasing downforce even more, better engine compartment evacuation and no problems with your rear half-shaft angles making them go South.
F1 cars are angled like that from front to back, and they have all the budget you could want.