Hot Rods Model A roadster top bows

Hello, my first question here. According to one manufacturer of aftermarket original type top irons the 32 ford roadster and the 31 ford model A roadster have the same top irons for the deluxe model. I say this because if you compare part numbers they are the same. My question is this are the steam-bent oak wood bows the same? Are they a different width?
One further question are the model A bows available from anybody, I have a 31 A
Thanks

 

Check Bratton's for Model A stuff. Located in MD, family run.