SOLD!
These are stock LS3 heads that I bought in spring of 2011 from Livernois.
The heads are 5 axis CNC ported intake and exhaust by Livernois.
They come with the Livernois dual spring kit (.690 lift), titanium retainers, super seven locks, vinton seals, and seat bases
The springs are installed at the correct height and seat pressures.
They have about 1500 miles on them and were used on my 2010 Camaro SS.
Asking $1500.
They are at IPS Motorsports if you want to have a look at them.
The pictures below were taken before they were put in the car last April.
http://farm6.staticflickr.com/5145/5613359669_20968f93f9_o.jpg
http://farm6.staticflickr.com/5027/5613359459_33943fdd7a_o.jpg
Selling them as is.