I am looking for a rear wing for my 04 convertible. I had ordered this wing but the company said it wouldn't fit on convertibles and canceled the order. However I have seen pics of roadsters wit this spoiler.

 

They did the right thing. Can't you se the differences between the coupe and roadster trunk contour? You either need a spoiler specific to the roadster, or you need the skills to adapt something else. There is an extensive thread about a roadster with the appearance of a Nismo - search for it.

 

and he had to do alot of work to get it to fit.....