I will try as hard as i can not to sound like an ***, so here it goes.
You should know what kind of person you are..either you want to go fast or look good. Asking people what to put on your car is like asking Donald Trump to pick out your clothes for you. People have different taste, you have your own. Build your car the way YOU feel like it should look, run and handle.
If you are an car enthusiast you should know what you want.
My opinion is that you either dont own a Z or really dont know what you want or doing. Not trying to be mean at all. Or you do not have confidence in yourself to do it.