I was looking around today and came across a company called Harrop Engineering. They have some of the coolest mods that I have ever seen for the LSx platform. They have everything from the new superchargers that they are using on the LS9 and LSA to a LS6 intake manifold with 8 indipendent 55mm throttle bodies. Check them out!
http://www.harrop.com.au/performance_products.html
p.s. I am in NO way affiliated with Harrop Engineering, I just thought it would be cool to share their stuff with you guys!