Yes that is what you are looking for. The thing you need to be careful on is the outter flange. It may or may not fit in your bikes drop out area. You need to look at what you currently have and see if there is extra space for the extended flange. Here are a few link that you may enjoy reading. You first is to another forum where Currie bikes are king. There's a lot of great info you can learn form. And you will find a thread on the freewheel modification. The second is a thread on a bike the is very simular or exactly like your and the mods this individual did. Again, good reading to learn.
What you can do is really only limited by your desire and ability.
Bob
PS...my user name on this forum is go4it Feel free to stop by and say hello...Bob
http://www.ebikeforum.com/
http://www.ebikeforum.com/electric-b...ip-2008-a.html