I did this.
Although now I don't know why ;)
I always have the windows down in my car when it's nice out. I only ever use the A/C if it's like HOT and HUMID and I'm in traffic and can't move.
That... and I've got a yellow lab. Frikkin' dog hair all over my car. Somehow it gets in the front where he's not allowed.
Anyways, enough about me. Sorry to go off on a tangent. This was an easy install on my '03.