Are the C10 - C20 long box beds interchangeable?

[leebotyler]

I'm new to the forum and I have a 3/4 ton C20 that I need to locate a bed for. I'm curious if the C10 and C20 long box beds are interchangeable?

 

[Originalthor]

Welcome. All bed are interchangeable. The only big difference between the years are 73 to 76ish don't have the gas door.

 

[leebotyler]

Awesome, thank you for the info.

 

[HotWheelsBurban]

Welcome. All bed are interchangeable. The only big difference between the years are 73 to 76ish don't have the gas door.

'73-'78 have the exposed gas cap, '79 started the filler door. And somewhere in there they changed the side from passenger to driver(where the filler is on single tank trucks).