I realize I'm a little late but I can help you or anyone else out on this. Email me at ctr75623@centurytel.net for any questions
http://cgi.ebay.com/ebaymotors/Jumpseat-Subwoofer-Box-for-S10-or-Sonoma-Ex-cab_W0QQitemZ8010677838QQcategoryZ33701QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
or...