Check out CZ forum, they have some good tutorials, and the CZ custom web site, for the parts. It is not to hard, you will need some punches and small files. It is mostly swapping parts. One of the tutorials advises putting the gun in a clear plastic bag before knocking the pins out, I thought they were kidding. They are not, there are a lot of little parts that go flying all over, be careful.
I got an SPO1, and installed the SA hammer and straight trigger with over/under travel adjustment, and removed firing pin block, lifter and spring. The trigger is tremendous, light with short reset. I only use it for competition though, as it is very lite. And I modified it to much for production in uspsa, but it is great for "outlaw 3 gun" with no major/minor for pistol.
A much easier mod is to use a reduced power main spring, a fairly easy part swap. You can also use an abrasive whiting toothpaste , mixed with some oil, applied to the parts that move against each other when pulling the trigger, than safely dry fire it alot, this will speed up break in and smooth things up a bit. Than of course clean the mild abrasive out, and test fire "alot", to make sure you will not get light strikes.
I also used the reduced power main spring and have about 500 rounds through the gun with out issue.
good luck shoot safe