Door differnce? Reg ext cab

I'm needing a new door for my truck. I've been phoneing around for the door, and am being asked repeatedly weather it's for a regular or extended cab. I thought they were the same but the guy at the junkyard said there are two different numbers in the computer for them. Whats the difference? He thought it might be the bottom rear corner shape. Anyone know for sure?

they ARE the same on both

There is no difference in the doors at all I have switched doors from regs to extras alot and they always interchange jut tell them you want a door from a 86 to 93. I have a few doors here that are excellent to mint condition.

shipping wouldn't be worth it i don't think. anything over $60 would be too muxh. thanks tho

what an idiot.