http://www.64moneypit.pages.qpg.com/6066chevytrucks/id4.html has the best year-to-year model change descriptions I've seen. On that site, for 1964, it lists several cosmetic changes and new options available, but the only mechanical change I see was the addition of self-adjusting brakes.
So...
If I convert a '64 to power disc brakes, will I lose the self-adjusting feature, or will I be adding self-adjusting disc brakes?
For that matter, if I add power disc brakes to a '63, will I be giving it self-adjusting brakes?
Still learning...
Thanks.
Steve.