I think both Classic Wood and Cubel (see suppliers sticky thread) makes them. I have heard some negative responses about Cubel here on the barn, and as for Classic Wood, I have had wood from them with several errors and where they are dragging their feet when I complain. Also I think I saw someone here on the FB saying that the suppliers where making the cabriolet no. 2 bow without the internal metal reinforcement. Don't know if this is true, but you should specificly ask that question before ordering. All in all I think that I have got better top wood by making it myself from the Ford drawings than buying it. However, beware, it is A LOT of work, so if you put a value on your working hours, it will probably be much cheaper buying from one of the suppliers. You will also need a good and stable bandsaw, and preferrably also a high quality table saw and router.
For the cabriolet no. 2 bow, you will not be able to make it in one piece like Ford did unless you have access to professional steam bending equipment. You will have to laminate.