SCE Pro Copper Cylinder Head Gasket 4.060" Bore 0.043" Copper Driver Side SB Mopar 3352722 1950 52 Features:Smaller diameter CNC machined billet Size:X Large Features:Smaller diameter CNC machined billet aluminum housing and billet aluminum base clears aftermarket heads and valve coversMust be used with an MSD Ignition ControlSupplied with small diameter cap with HEI style terminals and race rotor (will accept 8441 Cap A Dapt)Nylon pads ensure smooth operation of the advance weightsAdvance weight pins are staked and tig welded to the plateMechanical advance assembly can be locked out for crank trigger systemsAdvance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reductionPolished steel shaft is QPQ coated and guided by two sealed ball bearingsMaintenance free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeEasy to adjust mechanical advance with supplied springs and stop bushingsNo CARB Exemption Order Number Two intercoms in one Cylinder Head Gasket Pro Copper