I know what my general opinion of a chav is by how they act/talk or how they dress, it's pretty simple and although you do fit into the criteria, your speaking manner is better than a full blown chav (i give you that)
If i were you id scrap the whole idea as you'll get nowhere with it but hey, im smart about cars i won't buy a car i don't think ill make money from when i come to sell it or atleast break even, i don't see the point in loosing money on cars, say you spend 20k on your pimped out corsa, you'll probably on get about 6-7k back and thats being generous. Why? Because its still a CORSA nothing else and never will be!