Just want to know about the difference of E320 and C320. Aside from the appearance that C320 looks more than like a space wagon and E320 a plain sedan. The latter is more spacious I guess and can hold more luggage and stuffs on the back part of it. Does the Mercedes C320 parts are different from the others? And how about the Mercedes E320 accessories, can it be stuck on different models?

My uncle are planning to have a car shop where we'll sell some parts and accessories for different makes and models. Were still on the researching part of it. Hope you can help us with this one. Thanks.