I'm about to take delivery on an '04 C4S, and one of the options on this car are the GT3 wheels. I have asked the dealer to replace the GT3 wheels with the normal C4S wheels (turbo look), and I have received a price credit for that. I just like the way the normal C4S wheels look more.

Anyway, my question is this: is this a simple swap, or is there any thing tricky to changing out the GT3 wheels for the C4S wheels? I know both types of wheels are 18" (225 in the front, 295 in the back), but other than that, are there any differences between the wheels that make changing them more than just a straight-up swap job?

I figure the dealer would know, but I'm a little paranoid about dealer screw ups.