This apparently never went through the first time so I'm posting directly from Topica... Is there any reason that a harmonic balancer from a 66 318 Poly would not interchange w/ a 65 318 poly? The donor motor I just got has a HB w/ a timing mark on it where my 65 HB does not...just making sure it's a straight swap. Thanks Bill M 65 Coronet 500 'vert ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.