I've been using this as a generic FR setup. I do a lot of 2p battle, and this is a speed drift type setup. I can do grip, then drift and show off if I'm in the lead. I also do drift battles(we can't get close enough to twin drift) with one of my friends.
Extra: In parentheses () I'm including differences from a milder setup on an RX-7 RS I have. It should work similarly on the RZ, in case you don't want a full power tuned car.
Mods: All the way, with twin plate clutch and racing flywheel. Full weight reduction.(Stage 2 turbo, I think. Possibly normal exhaust. I ended up with 533hp)
Tires
-Either Medium Soft or Soft all around.
(Sports work for me in Free Run, might need something with more grip in 2p Battle)
Settings
Spring Rate: 4.0/4.0
Ride Height: To the minimum, can't remember what that is.
Shock Bound: 7/7
Shock Rebound: 7/7
Camber Angle: 3.0/1.0 If you need a bit more stability, try an extra degree of camber in the back.
Toe Angle: 0/0
Stabilizers: 6/6
Brake Balance: 10/24
Limited Slip Initial Torque: 5
Limited Slip Accel: 5
Limited Slip Decel: 5
Gear Ratio:
Auto setting-33 The taller gears help me out with top speed in 2p battle mode. If you don't care about that sort of thing, go ahead and make the ratios closer.
Active Stability Management: 0
TCS: 0
NK, make a good example for the new member 
