I am going to get my 1990 miata seats recovered in a really nice vinyl...BUT they are not perforated where the headrest speakers are...If I don't have holes then the sound will be affected...What is another alternative for the speakers? I thought about having 2 2inch in diametre holes in the vinyl in each seat covered with black material or something...Or even a mesh type material...Are there any other cars out there that have headrest speakers other than the miata? And what do the seats look like??