ok first of all steve, you will need a level 3 licence, and a cams approved roll cage.
targa is very hard on cars especially day 4 and 5,
if your car is in good condition i suggest dont ruin your car go and buy something else.
also all cars have to be road regestered.
if you want more details i can ask my dad he ahs done it like 7 times
ok
have a good day mate
greg