As I have never seen or held a diffusor (OEM or the glassfiber copies) IRL so the question that seem to be the issue of this project failing is:

if we make an exact copy of (either oem or the gf copy) and make it in cf material will it be a good fit. I can only tall the manufacture this: here is the piece, make a mold and x copies. If you say that the OEM diffusers are flexible and needed to flex in order to get a good fit, I would say that cf material do not flex. neither does glass fibre. But as I have never seen an oem on, or the copies, I cannot see how there should not be a good fit. But maybe you guys who own them can help me out understanding this. maybe photos of a bad fit. Anyways, if there is a slight chance of bad fitment from the start if we copy and make a mold of the oem/gf copies, then we need to do some from scratch. Let me say this, we are making some, if it is for everyone or just adams black series, depends really on this fitment issue. I do not want to carry out group buy for a product that is bound to crash and burn from the start. Either we all gamble (fitment) or we just go for plastic oem and foliate them in carbon fiber.

But just look at the SLS AMG BS, so nice with the carbon fiber... so what do you guys think.. will the mold arise? if yes, should we try to reproduce it in cf? or will the fitment issue still occur due to material choice.

Tired now, hope english is alright.