Hi
I have myself being searching the world for new bumpers and there are none. You could chnage the front to the new design at £400 ish.
I can if you want send you links to get body kits for the Barchetta.
But all you can get is:-
Side Skirts, Spoliers and Front spoliers. Best thing is to look at E-Bay and look at the German suppliers, do an advanced search and click on "All items available to the UK" there expensive.
I have spent 2K on getting my 02 Barchetta looking and performing better.