All 997 / 996 Products G50 Torque Flow Limited Slip Differential G50 Club Limited Slip Differential PDK Limited Slip Differential G50 Rebuild Kit for Getrag ’87-On $1,406 997 Cup Gears & Parts $329 – $1,538Price range: $329 through $1,538 997 Twin Turbo High HP 1st thru 6th Gears & Main-Shaft Kit $12,475