Hough H 60

Hi Guys, I have a hough h60 I been working on most of the summer. I got everything reconditioned on and almost ready to go. I knew it needed a front shaft carrier bearing thought I would do that last. My problem lies I called the Komatsu dealer and he states he has to know if it's a h60 a to h to get me the right part.

I have no idea how to tell. I have to get it up and running. It's dedicated out for snow removal and contract been signed. The Machine has to be on premise