Lingenfelter TRG-002 58x-24xLingenfelter TRG 002 58x 24x Crank Sensor Trigger Conversion Module 58x 24x Reluctor Wheel Conversion Module The Lingenfelter TRG 002 module allows Gen IV GM V8 engines with the 58x crankshaft trigger or reluctor wheel and the 4x camshaft timing gear to be installed in earlier vehicles designed to accept the 24x crankshaft trigger wheel and the 1x camshaft trigger wheel without having to take the engine apart to change the cam timing gear or the