[mattie]

I dont have experience with any of these kits but heres another option
http://www.hobbytron.com/search/index.php

 

[mattie]

The link didn't work for me.
Are these assembled?

Didnt for me either , and I took it directly off the page with the FM transmitters. But if you cut/paste FM transmitter in the upper right search it will pull them up. Some are built and some are kits, and sorry about that