I laugh just as hard at modified Z’s as I do at other modified cars. 90% of mods, particularly external ones, look crap. They also tend to make the car look cheap regardless of the actual cost of the mods. Exhausts really wind me. Larger capacity cars should pleasantly pure and gurgle. Smaller capacity cars should not be heard.
If you really really have to make serious mods to the car be sure you can return it to stock when it comes time to sell.