e46 coupe / saloon bonnets the same?

Here's an inetersting bit of copy for you from another site:

Despite the initial similarity, there's a myriad of differences between the coupe and its saloon sibling. The Coupe is lower by 46mm, longer by 17mm and wider by 18mm than the saloon. The windscreen has been raked back a further two degrees and the rear window slope is steeper, making the Coupe's roof both shorter and flatter. The front grille is more purposeful, bigger intakes reside in the deeper front spoiler, and even the headlights and bonnet show subtle differences. The mirrors are broader and lower in profile, with five knuckle-like fins atop each, designed to reduce wind noise. At the back, the bootlid has been reprofiled, robbing the Coupe of 30 litres of boot space compared to the saloon. As well as cosmetic alterations, the suspension has come in for a rethink, with the optional Sports pack offered on the saloon standard fare on the Coupe, dumping the ride height by 15mm. Standard suspension can be specified as a no-cost option or M-Technic suspension as a considerable-cost option. Inside, the generous shoulder, elbow and legroom mark the Coupe out as a proper four seater. Rear seat access is easier thanks to front seats that not only fold and slide forwards but actually lift off the floor to make entry even easier. Equipment levels are high, including twin front, side and head airbags, a remote control alarm, electric seats, alloy wheels, air conditioning and 60/40 split-folding rear seats that can be unlocked from the boot.

To built on that, I understand the bonnet length is about 5mm difference and that the line fit to the arches is different.