I found a used Hustler super Z bac-vac for sale. My plan is to convert the hopper for use on the Kubota bagger. I am not sure how much work it'll take but I'll find out soon, I'm going to pick it up this weekend. Luckily the Kubota bag frame comes off easily, no cutting necessary, bolts only. My plan is to unbolt it and build a frame the bolts in it's place that mounts the hopper. That way it could be swapped back to bags if needed. Attached is a stock pic of the setup I'm buying.
The weights are coming with it so I'll likely mount those on the front of my BX. I am going to give the blower and chute to my father-in-law to use with his Hustler Super Z, he already has the bags. So nothing will be wasted.