Tromix is suppose to be the best conversion company out there but they're not accepting orders until 2015 and they charge $395 for the labor. From what I've seen and read, if you can operate a hand drill and a dremel, you can do the conversion. I'm not sure when I plan to do mine but you're welcome to come over and help and learn if you want.
Depending on when this is, I might be game for an Edmond conversion party. Unless three's a crowd?