Don't chop up a Duc... especially if it's an SP edition.
I've regretted selling this bike, Red Duc, since the new owner loaded into his trailer some 5 years ago.
If you must build a Ducati street fighter then find an old 996 series, not a 916 as they are "special" too. There are many for sale and the bikes handling will not be as compromised if/when you start chopping up the rear end. Cutting the rear end on a 900 seems to reduce the torsional rigidity of the front of the frame making the bike push really badly just past the apex of a turn. At least these were the results of a stripped down frakenbike 900ss I raced in a 2v aircooled class immediately following our brilliant track-side surgery. Compu-trac said everything was at spec on the frame and fork so it was either chopping the rear frame or some bad mojo from the earlier crash.
The front light kit and faring on my old street bike were made by Powerbronze in the UK. Termi pipes are a must! Maybe find an older set of Termi slip-on reverse megaphones from a 888SPO.
.02+/-