650DP, Parker Funnelweb 4V intake, stock 4V closed chamber heads, Parker intake port tongues, home ported (flows 320+ @ .500), Probe pistons, Eagle H beam rods, stock crank with zero balance. Cam is a 238/248 Crane solid with Isky EDM lifters and dual springs. Ferrea valves with titanium retainers let the stuff in and out. Headers are 1 7/8" tube 44" from Tubular Automotive.