I suck with photoshop or anything, so you'll have to take my ideas through text...

On the front put "EF Squad" medium sized over left breast. Put "ImportAtlanta.com" in smaller text just below it. Make sure to get permission.

--OR--

On the front, put the "H" emblem kinda-large sized over the left breast

With either...on the back...put "EF" top and center and large. Just below it, put "Old Skool" a little smaller and centered. Below all of this, use a decently large shot of a CRx on one side (1/4 shot...like from the front at an angle) and do the mirrored image of a hatch on the other side.

Keep it black and white...just...real simple. They're basic cars...nothing exciting needs to be done.

Why did I not include the 4door sedan? I don't think any of the EF regulars have a sedan...and in most people's minds it's not really an EF...