Pape Enterprises Small "Sleeper" Topper?

[Harrison]

I just bought a 1984 long wheelbase crew cab dually with, what I believe is, a Pape Enterprises small "sleeper" type topper. It' extends only a few feet behind the cab. It looks like those I used to see on drag car hauler rigs back in the '80's (usually accompanied by an aluminum "wing" on the cab)

Does anyone have any info on these? I'm not sure if I'm going to keep it or not but I can't find much about these online.

Thanks, Jim