I have a 35K mile set of milled TSP PRC 260cc heads.....65cc combustion chambers.
The will come with 4,000 mile BTR .660" springs with titanium retainers.
You can have them with a new set of TSP 1.7 roller rockers or the OEM rockers w/CompCams trunion upgrade that came with the heads.
http://www.texas-speed.com/p-4010-pr...der-heads.aspx
http://www.texas-speed.com/p-6147-te...oller-tip.aspx
http://www.texas-speed.com/p-1088-te...m-package.aspx
If you need a LS3 intake and fuel rail, I have those, too.
PM me if interested.
KW