Very clean. I can get glimpse inside one of your rear fenders and it looks about as clean as the outside of the car, wow!
In the summer of 2006 there was a thread in the 911 tech forum about fitting an intercooler under a stock 911 engine lid. I can't find it now, but maybe someone else will know of it. They were discussing moving the intercooler forward so it sits partially under the parcel shelf. Looked like it would fit fine, but would need a little duct work to get the air to pass from the engine lid throught the intercooler.