Sportmans Guide 9mm Barrel conversion has been getting great raves on my other forums I visit. I have three cz's and a 9mm barrel I just haven't had time to test it yet.
It did install very easily though.
Have you made any other mods to the CZ, the motivation behind modifying mine is lack of commercial ammunition in my area. I've seen some pages featuring heavily modifyed CZ's, the come out really nice.