Since this is a duplicate post, eveidently no one could help you or they would have. Please provide enough info that someone with some knowledge can help you. Some of that information would be:
How about a picture of it?
What is the gearing?
What is the bolt pattern?
Why exactly do you need to find out what it is? either the gearing is right or not, if not then yuo will need to change it. And either it is adequately mounted or its not and therefore you need to fix it.
Please provide enough info and I will try to help you.
Chris