Internal Zip for 2000XL

If I want to replace the floppy in my 2000XL with an internal ZIP drive, what all will I need? I use a Mac and will be chopping samples using Recycle. Where can I find the parts besides eBay?

Please try the search, this has been covered many times already.
I'm sure with just a few searches you can find out what you need
to know Happy Hunting.