Kubota Quick Hitch for a B7400 HSD

[Ted Caveglia]

Does anyone know the difference between a B2733 and B2733A Quick Hitch. I am starting the process of adding a front load snowblower to my B7400 HSD and was told by a Kubota dealer I needed a B2733A Quick Hitch. I found a used B2733 are these interchangeable and will I run into any problems if I go ahead and buy a B2736 PTO Half Shaft and either a B2781A of BX2750D snowblower? Any help would be greatly appreciated. Thanks