hey guys new to the site so bare with me. i have a 78 chrysler been in my family since new it has an aq140a and a 280 outdrive. engine has been rebuilt twice and outdrive has never even needed more than a quart of oil in its life. would love to match the outdrive to a newer engine because parts for the old 140 are too hard ie.. expensive. any ideas on what i should look for in a used motor? oh yea hulls in great condition.