(1) used, good condition Blue Thunder Thor top end package consisting of complete heads with 2.520 titanium intake valves, 1.840 titanium exhaust valves, roller springs, titanium super 7 bead lock retainers, titanium captive keepers, complete T & D shaft mounted rockers & Blue Thunder cast single 4 intake plumbed with Nitrous Express Shark fogger. These heads are the version before the Gen II version. Heads are set up for .900 lift cam & were CNC ported by ET Performance & have 470cc intake runners. Heads have approx. 70cc combustion chambers. These heads have never been damaged. Heads flow approx 550cfm. $7000.00 for everything listed. Price does not include shipping charges. Contact Kevin Rowe at 812-969-3119 between 5:00pm - 10:00pm EST. Thanks!!!!