Bed swap question

[ONCEBITN]

I've got a 92 Silverado sport and I'm looking to swap the bed for a step side bed, getting it ready for paint, question is can I swap these two beds easily or do I need to drill.

 

[SCOTTYINWV]

My 89 was swapped to a step side.

Mounts the same.
A new step side filler neck will be needed though.

 

[1badgmc]

My 89 was swapped to a step side.

Mounts the same.
A new step side filler neck will be needed though.

This.