Since you already have a BX2200, you should give the Woods BH 6000 a serious look. The woods comes with plenty of engineered, formed steel plate that you bolt on to create a 4 point subframe. It attaches to both sides of the transfer case and to the FEL frame. I've seen pics of the Woods subframe on a JD 2210, and I've gotten a copy of the installation manual for my machine. I'm very impressed with what Woods has put together as far as frame strengthening, and I am very confident that the Woods BH6000 would be a worthwhile investment for when I am ready for my own backhoe.
Right now, I have the use of a neithbor's BX22, so I don't have the need for my own BH just yet, but when the time comes, I'm pretty sure I'll be getting the Woods backhoe.
You could do what I did, and contact Woods directly, and ask them to fax you a copy of the installation manual for your machine. That way, you can see exactly what is provided, how everything attaches, and decide for yourself if you want to purchase one.