ok, after reading all of this, this is a mod for in the next several months. Have a 2012 with 57000 miles on it, and it has been autocross / tracked this year / driven hard.
so I need to talk to joe@zspeed and get what I need, most likely will go with
https://www.zspeedperformance.com/ZS...ZSP-EZ-CMK.htm
Thanks to everyone