Before fitting a carrier you may want to read this
http://www.ducatisportingclub.com/index.php3?M=70 I just fitted a carrier and 41 tooth sprocket, replacing the old 38 tooth on my 748 acceleration is better and i noticed a difference around town, lost a little from the top end but not so much as you would notice, she seems to pull alot better from standing start and up through the gears is noticibly faster.
No speed cameras over here in Denmark so i tend to blip along between 100-110 Mph roads and condidtions depending. For a quick buzz i hit the German Autoban 20 mins from home and just open her right up before getting off and back onto the back roads for the return home.