I know this post is old, but i Googled "Orlando Cylinder Boring" and it showed up first in the results so i figured it would be relevant to someone who ran across this.
There is a shop that has been around forever (30+ years) called Precision Cycle. They used to do my dads cylinder boring when i was a kid. They do all kinds of stuff other than just bikes and Don (owner) is a straight shooter and a super nice guy. I have used them on quit a few of my projects and they have never steered me wrong. They do honing, port chamfering, head milling, welding, and a bunch of other stuff.
Anyways... hope this helps.
Here is the website: