Design for a female hypoid gear (to fit over gear)

http://imgur.com/a/APa9c

Hey Im new here not sure eif this is the best thread sorry if it's not.

I would like to use this motor but the Shaft has what I thing is a hypoid gear on the end, it's unlikely that I will be able to remove it and use the motor after. I'm sure it would be possible to design and other gear that would twist on top of it, a cavity shaped exactly like the gear? I may be not thinking about it properly. If it is possible are there any grate minds here that would have any ideas on how to design such a thing.

Thanks for your help
Tom