I am going to attach a page from the B series Whole Goods catalogue to show you the document you need to be looking for to answer your BX question. It is a document the Kubota sales people have not the Parts guys.
Dave
The short answer is no, the Kubota T2738 snowblower is for a small Kubota lawn tractor, that is quite a bit smaller than a BX2230. It would be like attempting to put a fender from a Chevrolet Vega onto a GMC pickup. The only thing that the two have in common is that they are both formed from steel, and that is where the similarities end. Below is a picture of the T2738 snowblower.