Wilwood Thermlock Piston - 1.75" Diameter - 1.05" Length - Fits Sl - NDL - GN III - Lc-GT Calipers 29522 Features:Designed for street/performance use with 5 Quarts Total Oil Size:X-Large NPR20-GNHS4150K8 CREW-NITRO-R1-HV

Wilwood Thermlock Piston 1.75" Diameter 1.05" Length Fits Sl NDL GN III Lc GT Calipers 29522 Features:Designed for street performance use with 5 Quarts Total Oil Size:X Large NPR20 GNHS4150K8 CREW NITRO R1 HV Features:Designed for street performance use with a mechanical and vacuum advanceMust be used with an MSD Ignition ControlSupplied with an HEI style distributor cap and rotor (accepts Cap A Dapts)Polished steel shaft is QPQ coated and guided by a sealed ball bearingMaintenance free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeEasy to adjust mechanical advance with supplied springs and stop bushingsVacuum advance canister for improved economy (can be locked out)CARB E performance that excites