I might have what you're looking for. It's an Alum-Line heavy duty aluminum topper with storage boxes on the driver's side; locking, sliding windows with security bars mounted on locking, top-hinged doors on the passenger side; top-hinged rear door with sliding window and bars allows you to retain your tailgate. It comes with a ladder to access the roof and the ladder mounts to the top rail when in transit. It fits 8' beds on any full size truck. It also has a power panel and interior lighting. It'll outlast your truck and likely several generations of our descendants.
They sell for $5995, plus tax and shipping, when new. How does $1850 sound? Scrap value for the metal alone is pushing $1,200.
I removed it from my truck a few months ago, then my truck was stolen March 7th. So, I don't have a vehicle to mount it on.
I can deliver it by trailer for a reasonable charge within the continental US. In fact, I'd be happy to have an excuse to bring it to CO so I can scout for elk hunting!
My e-mail is
tcorban@columbus.rr.com if you're interested.
Here's a link to a slideshow:
http://s1109.photobucket.com/albums/h425/tcorban/?albumview=slideshow
And a picture: