sbp 8 3/4" drum size?

Just an update. The car has an 8 3/4 I am assuming out of an A body car, but apparently a later model Dart. Whoever did the swap obviously did not know what they were doing and did not change the backing plates, and went ahead and put the sbp brake setup on the car. Very stupid, and very dangerous! I acquired all new brake components AND the correct backing plates and it is amazing how well it all fits!
And now a word on safety. I bought this car for street and strip use. It has a lot of good components that will eventually make it a nice car, however the previous owner(s) were interested in going fast, only. The entire brake system is getting replaced by me including all the lines and hoses. If you are driving an old hot rod it would behoove you to investigate the brakes,completely. These cars are very old at this point and you never know who was working on them over the years,and what their qualifications were. I was trying to undo lines at the prop valve and they would just break,rather easily just trying to undo them! Not good,and certainly not safe. Check your brakes folks. It is great fun to go fast....but even more fun to be able to stop when one is done going fast!
Off the soapbox.....

VERY well said!!!!