donor truck year compatibilty

[Jamminjohn]

I have recently bought a project truck that is missing quite a few parts.

I was thinking of buying a donor truck and just taking the parts from it.

I honestly dont know what I have.
I know I have a 70 cab with a 67 front clip.
I also am pretty sure its a long bed(missing bed)
I bought it off a member here and he hasn't responded to my emails or texts
asking for clarification. I have searched his posts and it looks like it could
either be a 67 or 68 c10 or c20. The front and rear ends both have been updated to 5 lug and it has airbags.


My question is, Can I buy any 67-72 longbed c10 or c20 and use the parts
interchangeably?

thanks,
John