speakers in kickpanels ??

I have an old set of Boston Acoustics 5-1/4" component speakers I would like to make use of in the Dart. My preference would be to mount the mid-bass driver down in the kickpanels. Anyone done this? What is behind the panel? How much room is there? How deep can I go? Will I have to cut metal? Anyone got pics with the kickpanel removed? Are there any aftermarket suppliers of custom kickpanels with speaker provisions? Too many questions? :bounce: