413 marine industrial (E) engine, to, not so industrail......

did you check out the distributor diagram on the 318 and 413? each boat has 2 ,318s or 2, 413s. one rotates clockwise one rotates counterclockwise, in each boat.. both dist caps have the no 1 cyl and no 6 cyl opp of each other, at the cap. . BUT the other cap towers are diff of the other cap. of course.