The Peugeot 206 RC is incredible.
All mods, turbo 1 for 250 HP, but you can go as high as 340 and it will still handle like a dream (not sure whether I need oil change though)
Settings (F/R)
Springs 9/7
Height 110/120
Dampers 7-7/5/6
Camber 2/1.5
Toe 0/-2
Stabs 2/4
Brakes 3/12
LSD 1-way
TCS 1 or 2 may be a good idea if you plan on pushing it past 300HP
Gears according to track, but autoset to 8 or so should be a good allrounder. The settings look weird, but they were good enough to annihlate the opposition in the 206 cup using R2's (15-30 sec wins with d-pad). Don't know if these settings will work on S tires.
Edit: The car has got VERY sharp turn-in under braking, and will NOT understeer unless you spin the front wheels. Consider setting toe to 0/0 or getting a 1.5 way LSD if you think it turns in too sharply under braking.