post the # on the machined pad on the pan rail AND look on the ext housing on the side about halfway back on iirc the dr side for a cast 2 digit # such as "77" which'll be the CASTING year & not likely that the ext housing has been changed/not orig so that'll get you close until you post the # & someone can pin it down further

live every 24 hour block of time like it's your last day on earth