2a door frames fit a 3?

Hi guys, first post, hope i have found the right spot for it. I have a 74 series 3 109", 2 door. The door panels are rotten, and there a couple of 2/2a door panels on ebay - anyone happen to know if the doors changed from 2a to 3? I tried having a look back through old threads but couldnt see - any ideas much appreciated!

I asume you are talking about the complete door bottom, not just the outer panel.
The doors will fit (unless tou have "anti-burst" door locks, in which case you will need a hole for the key barrel) but the door restaint system is different.
On the Ser III the stay is attached to the bulkhead, and runs in a channel on the door, on the Ser II it is attached to the door, and runs in a channel on the bulkhead. Shouldn't be insurmountable.

thanks davec, i meant the frame not the panel - was hoping that i can take the door skin off the rotten frame, and transfer on to the new one.