compomotive wheels,from ford cosworth 15" ?

4X 15" compomotive Th rally wheels, these were removed from a sierra cosworth track car, theyre by no means mint but they are all straight, could do with a rub and paint if wanted for looks! come with 4 tyres,,3 of which have between 4/5mm each, and the 4th has about 3mm 6jX15 ET20