Parking brake cable trailing arm bracket

[1964C10]

Well I have the rear of my truck complete stripped to the framerails In doing so I noticed that the clamp holding the parking brake cables to the trailing arms wasn't "stock" It is one of those fold over clamps with a bolt hole and a tab to stick in a second hold to prevent it from turning as you tightnen it down. However, there is no second hole in the trailing arm so someone just put an extra washer underneath to get it seat right. I know my explanation is kinda crappy but could anyone tell me how this is supposed to look originally? Thanks!!