They are hard to see sometimes, my 69 warranty block is E383 HP by the dizzy as I just checked and has no VIN number on the 69 pad area, and the rear mount is not shaved. It has the drilled bosses but also has what appears to be a 68 style non matching SO number on the bellhousing flange to the right of the oil pressure sender close to the right head. Pan rail by starter is PT383H25130103 which would put it close to a window of 6 months from build of the fender tag.