Unless things have changed, the headlights are still a DDS file.. or in other words, not part of the skin at all. In which case, they will see every car with the same type headlights as they have. It's too bad such is the case!
I have made this kind of skin to XFG. Its my first public skin so im not sure is it good or not, but i like it and i use it. Its not supposed to look like the car that volkswagen uses in WRC but something like it . Try it .