I think everyone is missing the topic. F6 tune into XR6T. Yes the tune can go into the car as long as it is stored on a flash tuner or laptop, then place inside the car.
If you take it to pedars they will tell you what you need. http://www.hp-f.com.au/catalog/ford/ford-ba-bf-turbo-ford/ba-bf-turbo-ride-handling/ba-fg-racespec-suspension-upgrade/ Or Kpm