How to make car sounds like a real rally car

I’m making a car game and I really want to know how to make cars in unity sound grate, And I want my car sounds like a real rally car, and I know just with one car audio clip and pitching the audio simply cant service, so if I got multi audio clip with different range of rpm, Is there any way to achieve this sound like the link blow, Is anybody know how to do this or just give me some kind of tips, thinks!

make the pitch change 1.0 to 1.5 it give sharp sound something like high acceleration