10" backing plates???

Thanks, I think I will stick with the 10" as I have heard some people "claim" to have issues with the huge 11" rear brakes on A-body's needing adjustable prop valves to "tune" them in and such.......Plus they say its overkill on an A-body. I do not have any experience with this so I cannot say for sure.....Ill look around for some 10" 4.5" bolt pattern rear brake parts,......Thanks again.