Best custom sports car Honda Civic above is designed in standard look. You can see that this Civic is covered with full red car paint, I like the unique lamborghini doors that ia applied to this Honda sports car. I think as the street racing car this idea look better. If need more custom, you can add several cutting sticker on this car front fenders or at the side doors.
The custtom 2007 Civic above has custom sun roof then I can see chrome wheels. Simple and sporty is the best theme that is used to build this tuning model. Civic has the best basic street racing sports car exterior, I think you just need simple idea like vertical doors that has been applied above.