Yeah, if you have the i4, you really "cant" do the swap. It can be done, but it would be way cheaper and less work to sell your car and buy an LS with the 03 in it already. You can also check out this link here:
http://www.mx6.com/forums/showthread...threadid=24982 (KLZE?? What, How, Why??)
The search function is your new best friend. There is tons of info on this site on the ZE, so take a look around, search, and you will find.
-Bryce
