my previous post says that there was a split from 62-63 so when you go and try and compare 60-66 to later ones doesn't work. you can use the later one in the arlier trucks and they can be adapted to work in a 60-62 only if you are installing a 63 and up I6 eng that has provisions for the side mounts or a 57 or 58 and up v8 which are side mounted.
re different lengh of towers for a 2 w/drive, the only tower which is of a different dimension 63-66 is the passenger side tower for a 292 I6.
ron
