Thanks again for your time and help in identifing the 3.6 motor I bought. the numbers indicate it's a 1958 model. After researching the history of Scott/Atwater and the sell in 1956 to McCouluch, were there any 3.6 motors manufactured in 1959 or were they last years stock from 1958 sold over. I know this sounds a little detailed, But it has been referred to as a 58 or maybe 59. Would'nt it have a 9 designation on the stock number if it was put together in 59? Just curious