So when we open the cars folder we have several files
/the example will be my latest skin for the Lancer Evo7 'road version'/
C:\Program Files\Codemasters\Colin McRae Rally 3\Data\Cars\Evo7_rs2
DamWheel.TAG -> the dashboard model
EVO7Rs2.big -> the textures
EVO7Rs2.tag -> the car model
shadow.TAG -> the shadow
the steps are very simple
1.Locating the files
2.copying all the files in the directory shown below and we can drive any car in championship mode /the bug one of my friends discovered was that in SSS stage the Focus is still in the race and this is strange coz the model is replaced/ -> at least he told me that but I don't have time to test until I'm done..............
C:\Program Files\Codemasters\Colin McRae Rally 3\Data\Cars\For_focw
EVO7Rs2.big rename to -> focWRC.big
EVO7Rs2.tag rename to -> focWRC.tag
3.changing the sound
c:\Colin McRae Rally 3\Data\Sounds\car
evo.big rename to -> focus.big
evo.fds rename to -> focus.fds
evo.fdl rename to -> focus.fdl
evox.big rename to -> focusx.big
ND U R DONE ;]

