trucker, the '53 and up parking brake cables are different.
I'm not sure what the exact difference is, but the parts catalog shows a different number for '53 and '54. I am only doing the upgrade on the front for now.
oldblu, the Bendix backing plates already have the large top holes. You have to enlarge the spindle holes to match the backing plate.
I just did a
preliminary fit up of the Bendix setup on my '52 axle this morning. One thing I did find is that you need to remove a little material from the backing plate below where the wheel cylinder mounts to clear the top of the spindle. See
circled area in photo. I suppose you could grind the top of the spindle for the clearance also as there is a lot of meat there.