Your main problem will be that most people dont want to pay the ££££ for the parts once they're done They also don't understand the costs involved in getting bits fabricated and you get told it's overpriced, etc

From my experience of doing some custom bits in carbon fibre for my Focus RS back in '07 and basically after i did them there was loads of "demand" from people who wanted the same bits done. I spoke to the company who did it and got prices for varying size production runs, but then got the usual forum response that it's overpriced and that they could get it done cheaper, etc.

Following that, to this day only Streamline Carbon have replicated a couple of the bits i did like mirror covers as i think other people found it wasn't as cheap/easy as they thought it would be. In some ways it's lucky i hadn't had a batch run done on some parts as i'd probably still have them now, or would have had to sell them at a loss.

No doubt there is demand for certain bits with the FRS, but as said the problem is finding the people who genuinely want to spend the £££ on decent quality work. Forums are awful anyway as you'll always get loads of interest in bits but very few will ever come up with the £££ when asked to pay the true value of the part