[Porsche]

The thing with the engines were that they were just to wierd. I liked it at CF with the stars. My suggestion would be to have high next levels like it was said. It should go something like this:

50= 1 star (Or some sort of symbol)
100= 2
250= 3
500= 4
1000= 5
2000= 6 and so on after that

I know these seem high right now but it would save you time in the long run instead of changing it. As for names I don't really know, maybe use a variant of what is on there currently, something with more distinction than that of the last.