Here's another bit of information about top irons.

I have a running 32 roadster as well as the under construction 31.
Measuring the cockpits of both shows they are very close in size.
Both transversely and longitudinally.
The only real difference is that the 31's cockpit is 2" shallower than the 32's and maybe an inch shorter longitudinally.
Easily handled with a little lower seat bottom cushion.

Since the cockpits are the same size - for all practical purposes - the use of 32 top irons looked possible.

The A windshield stanchions sit a little further back on the cowl than do the stanchions on the 32 and the slight difference in cockpit length make an adaptation of the 32 top irons easy.

There's about a 1/4" difference in cockpit width measured at the tabs the rear legs of top irons bolt to so spreading the 32 top irons here is no big deal.
The only other thing you have to do is cut the single front longitudinal bar that runs horizontally from top iron hinge area to the windshield header oak bow.
Depending on windshield lean-back (and you do want some so as to get away from the funky look) the cut should remove about 1 - 1 1/2".

Modifying the top irons like this is easy, but most importantly it gives the overall shape of the top a better look.
The lean forward component of the rear of the Deuce top as vs. the vertical component of the rear of the A top makes for a swoopier (to coin a word) looking top.
(The top of the 32 windshield posts on the A stanchions are about the same width as a stock - although chopped 2" - 32 so using the 32 front oak header works here.)

You can do some relocation of the top oak bows to alter the shape of the top at the rear as well as add a little bit of 34 roadster flavor with an even stronger lean forward component to the rear of the top.

Subtle mods, but they go a long way toward making a 'right' looking car.

To my eye anyway.