The stock rear spoiler bolts on through the glass w/three bolts, so 
attaching a new spoiler using these would be a piece of cake (just 
make sure not to overtighten). The three bolts are all along the top 
edge, spread out evenly.

The stock spoiler extends almost 4" from the hatch to the edge. Since 
more spoiler = more downforce, I would think adding 2" or so on would 
be no problem. Does anyone know how the Zender type design would 
benefit downforce more than the current design? Does anyone else like 
this idea?

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Philip Meadows Jr.
pmeadowspost.smu
http://www.smu.edu/~pmeadows