A:AnswerThe Sony XSMP1611 Marine Speakers are not available with black grill. The Sony XS-MP1610 Marine Speakers are available in black as well as white grills.
A:AnswerYou can get the information about the cut size for the speakers from the following instruction manual.
http://www.docs.sony.com/release/XSMP1621_MP1611_install_EN_ES_FR.pdf
If you wish to get more information about installation of the speakers in a boat, you can contact Best Buy for their installation services . The contact information for Best Buy is available in the following page.
http://www.bestbuy.com/site//olspage.jsp?id=cat12090&type=category