11 to 1 iron magnum heads, 231@.050 110 LSA .575 lift single pattern cam. Full ported factory magnum heads 2.02 stainless valves mirror polished to keep from absorbing heat as much as possible 410 SB I pulled all the tricks I could think of to make it work, mopar air gap single plane intake, routed fuel lines outside frame away from ex heat, ceramic coated long tube headers, CAI picking up air in front of radiator, EFI, I cut all the webbing out of the accessories bracket to keep air flowing through intake, heat shield under intake to keep hot oil off intake, 160 t-stat, big diesel fan to keep lots of cooler air under hood, throttle response is insane and pulls hard from idle to 6000RPM.