wanna buy WING for my coupe

i think that is the saleen wing. Here is one on ebay.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2451912852&category=33638

What is your motivation behind the wing? If you are after increased downforce and want it to actually benefit the cars grip and stability at speed, your best bet is to go with an HP Motorsports Aluminum Wing (same wing is used on World Challenge cars). http://www.hpmotorsport.com

I run a custom wing that I had black anodized on my race car (i.e. driving with one on the street makes you a target for jokes and kids blipping the throttle). The wing is from an Ultima kit-car. It mounts to the stock spoiler (which creates lift) and increases the downforce at higher speeds (i.e. 130+ is where I start to notice it, otherwise it's just a pain the ass).

Here's a photo of one: http://www.ultimasports.co.uk/gtr/pics/gtr18.jpg (slower connection warning.. this is a large image).

Try www.designconceptsauto.com they sell a Saleen wing and quality is great. Although if I were you I'd get some rims and a lowering springs and forget the wing, but thats just my opinion.

I agree with everyone else as far as to not buying that ugly thing off Ebay. Looks really cheap. The only exterior addition my coupe has just happens to be the Saleen wing and look great. I have been debating on if I should take it off when I get the fiber glass truck lid. I am liking the original look once again. It look clean and makes the notch look it's best. I would go with the springs and rims myself if I had to do it all over again though.