FT version isn't scheduled to September ish next year.
Personally all I did to the standard kit was shim the diffs slightly to improve the mess and stick a shim under the steering rack. Haven't needed to do anything else and the car is dialed and driving nicely.
I have a graphite kit pre-ordered to make it that little bit more responsive but it doesn't really need it.
Put it this way out of the 3 TC4's that are being raced at my club they finished 1st 2nd and 3rd on their first two race meetingsand 2nd, 3rd, 4th on their third one