Love to see some pictures of your van, bed, and your swivel bases! Let me know if you start a build thread or have some posted already.
See mine here
http://www.expeditionportal.com/forum/threads/87896-2004-Chevy-Astro-Build-Colorado-Camper-Van-Poptop
See mine here
http://www.expeditionportal.com/forum/threads/87896-2004-Chevy-Astro-Build-Colorado-Camper-Van-Poptop