Need opinions
 

So I'm almost done fabricating my rear diffuser and think i may change up the design slightly. Which one do you guys think looks better?

The new design has an (currently cardboard) ending fin at about a 45 degree angle to match the lines of the car. It will have two fins near the center similar to the original.

the old one is the old prototype made from fiberglass (last pic).

Right most, no doubt.