Hey guys I have been tracking an oil leck on my 68 Cuda 383. The oil was slightly lecking at the rear of engine, I checked all the basic areas (valve covers, oil pressure port, oil pan gasket ) so fearing it was the rear main seal I ran the car for the rest of the summer. Now that it is winter I decided to remove engine and tranny (4 speed) due to clutch problem also. So after removing flywheel I noticed traces of oil on back of engine (behind flywheel ) and also oil in this port ( where punch is pointing in picture)is this the rear main cap bolt galleries? Thanks for any help.