I dont really have a tune for the RX-7 FD '02 but ill tell you what i did to make it my fav drift car at the moment.
Buy it, Buy FC LSD, Buy FC Suspension, Buy first engine upgrade, Buy low RPM Turbo, Buy Comfort Hards.
Go tune: lower the ride hight a little for looks, set the LSD to 10/60/60
DONE. Hope you like.