Changing from drum to disk question.

[69rag500]

In changing my brake system on my 69 coronet rag. Car had non power drums. I picked up an original disk set up but i never got the booster back plate the goes on before you slide the booster in place.
Is this plate the same on both drum and disk. I think maybe the disk is bigger.Not sure.

 

[68rules]

Yes, you will need the booster back plate if you are going to use the booster. It has the holes for the booster studs.
Some new plates have all the holes for a booster or non power master. No power cars have studs in the back plate facing the firewall where the booster holes should be.

 

[Sixpactogo]

This is the plate you will need along with circled part under the dash.