I am trying to determine the correct part/casting number of the harmonic balancer that would have been used on the 68 MO 302 engine . Does anyone have one they would sell ? I believe this should be an 8 in dia x 1 11/16 wide balancer ? I have seen some with fins on the inside which I believe to be earlier vintage and some without fins but cannot seem to find info indicating which is correct for the 68 MO engine
