you seem to be confusing "lexus" which is a big car made by Toyota, with "LEXAN" which is a type of plastic.
the shells on model cars are made of lexan plastic. Halfords paint is designed for proper road cars, not little plastic model cars.
As said, you need to go to a model shop and by some "lexan paint". Then spray the shell on the INSIDE. that way, when the car rolls over it won't get scratched off.
If you want advice on this forum, best to follow 2 rules
1 - try and type a normal sentence. no stupid text speak typing. that way people will understand what you are asking
2 - follow the advice given. People on here have been racing for years so they know what they are talking about. If you tell them they know nothing they will get annoyed and give you no further help.
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