I had one very similar to the Caboose on my ‘57 3100. Fit just fine over the cab but was way too heavy. I did have overloads on it but they were very little help. This would have been in 1970 when I was a carefree newlywed. One short overnight and I took it off.🛠

Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)