Technical 1930-1931 Model A Coupe door opening dimensions

I'm looking for the measurement between the A-pillar and B-pillar at the bottom near the subrail and at the top.

I've researched and found different numbers on the net and from other builders...

Any help is appreciated, Thanks.

 

I got 26 7/8" at both the top and bottom inside of a and b pillars[think even with glass]. I got 26 3/8" at bottom of door right above floor.

 

Same 26 7/8" top, 26 3/8" bottom