Does anybody know good shop in Southern Cali that will take on installing a diff in the FiST? So far Mountune wont because I am going with a wavetrac and they only install products they sell. Cobb in Fountain Valley wont, Technosquare wont (even though they installed one on the motoiq FiST) The only shop that I have gotten to say they might is Road Race Engineering. I am going with the wavetrac and 4.3:1 final drive. Don't feel comfortable cracking open the transmission myself.