tanzara, the top has a straight brace from the back of the wheel well and the bottom has a curved line.
http://img410.imageshack.us/img410/244/tanzarabackbracelr4.jpg
volksdragon, top has no brace from under the hood to the base and the bottom one has a brace.
http://img248.imageshack.us/img248/6139/volksdragon31hoodbracene7.jpg
volksdragon, different braces behind headlights.
http://img57.imageshack.us/img57/4052/volksdragon31lightbracebu3.jpg
team matchbox, left one has a thinner roll bar behind driver and a thinner front, right one is thicker.
http://img57.imageshack.us/img57/9872/teammatchbox24sfbarxs4.jpg