Yeah that's my interior. Got them carbon dipped, its good quality stuff. Its fake carbon but looks good, better then plain plastic I think.
If you want real carbon fibre you would have to make it yourself. A thread posted by REspirit said PasswordJDM are gone bust they sell carbon panels.
You could
1) get one of these carbon panels
2) take out your current stereo surround,
3) trace the outline of it onto the carbon
4) very very carefully cut along the traced edge to make a nice sharp edged perfect fit.