Jstrat sells one. I have a RSC, great piece. Use the search function, lots of info on this topic. DO NOT USE THE CAT IN BOCA ROTTON (sp), FL. Cant remember his name but he sells junk and a couple of guys on here have been screwed.
Yes I make one that is really a 570 bumper adapted for the Gallardo. These are all hand made, so yes unfortunately at this moment there is a wait list, but I want to ensure that we aren't rushing production just to make a sale.
Here is a car that belongs to a member on this board. It features my bumper.