LS6 or 5.3 heads
If you have any questions please feel free to give us a call, or checkout the dyno section for results from the PRC heads. I think you'll find for the money they're HARD to beat!!
http://www.texas-speed.com/shop/item...id=84&catid=20
http://www.texas-speed.com/shop/cate...MID=1&catid=47
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com

