I was wanting to install an alpine deck in my 300. If the deck is installed there will be a large opening in the dash. Does anyone know if there is a stereo install kit out yet to fill the space. If so where can I get one. Also I was told that the 300 are well sealed and insulated so that it would be hard to here the woofer. I only plan to put one 10 inch woofer because I need room for the baby stroller. Will one 10 work, any info will be appreciated thanks.