Installed the GC kit today. I went with the slightly softer version 600 # springs in the rear and 375 in the front. (instead of 440) Dropped the front 1" to preserve the ride and performance and the rear maybe 3/4" The Ride is awesome. The performance is better than OEM. Overall, I'm really happy with the kit. Really glad I didn't just do springs.
The instructions were not very good... but I really like the kit