How many different truck doors are there???

[Michael_e]

I'm Mike and I don't post a lot mainly because i'm not real good with words, but, here goes.
Like the title says, How many different pickup/truck doors are there and what car doors might interchange?
Let me start with my situation. I was recently given a truck cab in rough shape and it did have a passenger door, but no drivers door. I found a ad for a drivers door and he was close by. We exchanged a lot of messages with a lot of measurements and it seems there are a lot of size differences. I just thought that a pickup cad and a larger truck cab were the same size. I read various posts on here and the HAMB that said that very thing. But it seems that might not be the case.

My door and the seller's door were different in height- 47" and 44". Different in window opening and different in beltline location and even in width.

So, does the larger truck have a completely larger/different door than the regular pickup?
Is there any thread with truck/pickup door measurements?
Are the door hinges different?
Are the handles/lock and window crank mechanisms different?
Are there differences in the cabs/firewall/fuel tank/sub rails?

I think I might have a cab from a large truck, not a pickup cab.
I can provide any and all measurements from the cab that I have.
Mike