Stockland used to make a pretty nice fiberglass shell. Had one on my 84 Ford Ranger, best shell I've ever seen, it actually had some sort of rubberized weather stripping around the base of the camper shell that sealed completely around the truck bed, then it had a rubberized boot between the cab and the shell. That shell was installed the day after the truck was bought new by my grandfather, and never taken off until the truck had been sold in 2004 and the new owner decided to remove the shell and apparently the shell had grown to the truck it actually took the paint off the bed rails when the guy removed it.
Anyhow here's the only picture I have of that shell, and I'm not even sure if that Stockland company is still around. Shell and truck was bought in California in Auburn I believe. I just wish I knew where that truck is today, I really wish I could get it back I miss it.