What do you have in mind for the style and theme of the web page?
Needs to be responsive, modern, product based. Needs to think of online commerce, however pricing will only be visible once they are registered and logged in.
Make sure there is a car selection menu dropdowns for Make, Model, Year and then Engine. Also need a car reg enter as we can use that also.
It will be good to have sliders for promotional items - I really like the http://www.eurocarparts.com website.
Home page and then a sample product page
What to avoid
Try and keep to the prasco green, but feel free to use photos/images to really make the design stand out. The site must be professional.