OEM doors that work with 77 door panels ?

[1979 GMC Sierra]

I have a 79 GMC and i'm looking for some OEM doors cause mine are getting rusty on the bottom. I have woodgrain door panels out of a 77 that i still want to use...my question is: which year doors will my 77 door panels work on ? I was originally told they will only work on 77-80 OEM doors. But now i've heard that they will work on 77-87 OEM doors. Would love to see what you guys think before i go out and find/purchase some OEM doors. Thanks.