I recently had my Gallardo converted to a twin turbo by Heffner Performance. He did a fantastac job, including rebuilding the engine with steel cylinder liners, forged pistons, lower compression. I have put over 2k miles on it and it runs strong. 750rwhp too!
Here is a vid we made of a street race and a 11 second pass at the drag strip
http://youtube.com/watch?v=fa1tgDOFWIk
www.heffnersperformance.com