Answer these two questions and you will have your answer.
1. Do you have the skills and abilities to do the work yourself?
2. Do you have the finances to pay someone to do the work for you?
That loader is for a BX, a smaller tractor than your B.
It's more than likely not only going to be shorter, but also sit to high off the ground, the BX that that came on had a much lower stance than your B.