Fully assembled SET of good used Sonny Leonard BB5 CNC heads. The heads are a 395cc intake runner with either 125cc chambers or 129cc chambers. The intakes flow 405cfm @.800 and exhaust flows 275cfm @ .800. Heads will be assembled with titanium retainers, 2.350 SS intakes & 1.880 inconel exhaust. These heads have been repaired and pressure tested perfect. Suitable for 540 to 632 Cubic inch. Sonnys sells these heads new for almost $8000 a pair so you are saving half !!! The photo is a representation. we will assemble as we get orders. The Sonny heads are machined for TD shaft rocker arms.