As long as it is a 6' bed it will work. The bed mounts are basically located in the same place, however they aren't exact. The '79 bed I put on my Dad's '86 farm truck left a gap of about an 1" between the cab and bed.
![](http://img.photobucket.com/albums/v33/Snowtoy/Other/2ndgenframe.jpg)
Gap from a distance.
![](http://img.photobucket.com/albums/v33/Snowtoy/Other/1genbdon2gen.jpg)
I wanted to pull the bed off and elongate the holes to reduce the gap, but my Dad said he didn't care, so we left the bed as it sat..