You should remove the engine assembly, the valve lifters, the engine front cover, the oil pump driven gear nut, the oil pump driven gear, the oil pump drive gear and crankshaft reluctor, the
Camshaft reluctor screws, the camshaft reluctor, Remove the camshaft exciter ring, the camshaft thrust plate bolts, the camshaft thrust plate bolts through the holes in the camshaft gear, the camshaft with the camshaft gear attached, the camshaft gear bolt and discard, the camshaft gear and the camshaft thrust plate.