You might check if Kubota has a frame kit for mounting that backhoe. Though they don稚 come up very often, the Kubota backhoes sell for about 1/3 what a new woods would cost in my area. The woods wasn稚 even an option for that money and at least according to the Kubota dealer selling the Woods, there were no strengthening options for my 7510.
When I found a BH4672 for my B7510 I did a little research and found that Kubota supplied these with a subframe and reinforced wraparound top bracket. All of which were still available for under $300 total which was money well spent I thought.