I do a lot of shipping. If boxed in that size about $100 or less. I just shipped between those two states. Downforce made 2 hoods a gen 1 and a gen 2. The latter is a perfect fit, it's an exact replica of a real R hood it was made of. Fitment is not your only issue, longevity is important and some hoods change shape and discolor over seasons of cold and hot. If you speak with Peter at downforce which is though but valuable he can explain to you the differences in resins and build process. I can tell you having owned many downforce parts the quality is very good. If you contact Thomas@downforceusa dot com, he will work with you and get you a great deal and he will stand behind the product. If you buy used, make sure you know which you are buying but it will be tough as the only thing different between the two gens is fit. And I've seen gen 1's silently sold as "downfroce". In some cases the owner too may be unaware.
The AC issue is a legit issue but totally not what you think. If the car is a targa, with a ducted hood and accompanying duct (which downforce also makes a good one just buy the FRP version because it's hardly seen).... They are so efficient together in design they change the airflow around the car. You get a lot more downforce at speed, and if you have the targa off and are putzing around town, hot air comes through the duct, over the windshield, and into the car making your AC less effective. Not useless, just not as effective. Remember the duct was designed for the NSXR which is a coupe. You can PM me if I can be of further help and good luck.
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This is my hood after 6 seasons of hot and cold through New England winters. Still looks like new and fits like my OEM. On it are also some super low profile latches that I recommend with any composite hood. Also you can get the downforce in FRP, half carbon and half FRP, and full carbon on carbon. And the prices vary.