Can you not download the official Z, just put the appropriate setup into the setups folder, then hotlap as normal ? It doesn't seem that complex to me.
Plus, you technically should keep a current version copy incase the test blows up or something. :P
Edit: boothy says you can just swap out the appropriate exe.
and since I've done what had to be done, I'm not going to do it all over again 
anyways it is okey from the basic structure... but it is f***ing low res...
but intersting
(hate when start times clashes)
