The dealer installed a moonroof on my P5 before I took delivery. It's made by "AutoShade", I think.
Works/looks real nice, and the control button is next to the little change holder to the left of the steering column. Works like factory, opens into the roof and also tilts up. Overall, a nice item, but I've got to change the light bulb in the control button (It's green, and as you know, nearly everything else is amber). It was the same price as the factory roof - about $800. Don't skimp on it if you get it - a leaky, cheap roof will ruin your beutiful ride.
I think it might be a little noisier than the factory unit - the weatherstripping setup is a little different, and the wind noise can be annoying, even with the roof closed. Gonna get the deflector and see if that helps.
But it closes automatically when I shut off the car, which is a real nice feature - don't know if the factory roof does that.
I've got the Pursuit alarm also, with remote start. The remote start is the greatest thing since sliced bread - totally worth the extra $125. Thought I'd never use it, but I use it every damn day, and not just to impress the neighbors.
They won't install remote start on any stickshift car. Too much danger of starting the car in gear, plus the safety of having to press the clutch to start would have to be disabled.