Well wow that's a lot of dough, try a call to Xclusive customs they do a replica one
£500 they will also paint and fit it for you .
https://xclusivecustomz.com/product-category/manufacturer/porsche/gt2-style-body-kit-for-997/
I think they are GRP or another composite material, but that doesnt matter its a fraction of the price of the OPC one .
I have their GT2 side skirts made for both wide and narrow body cars . these are PU and look great fitted
Sorry not the best pic of the side skirts but I was on unrestricted autobahn :grin: :floor: