Brake shoes help (8 3/4 BBP)

What size and width are the brakes on each? 9, 10 or 11 in drums? 2, 2.5 etc. width shoes? You dont want too much rear brake or you will be locking them up with the stock proportioning valve. I went with 11x2.5's on my val and it is too much. I added a Wilwood manual prop valve to compensate, but that much brake is unnecessary on my car.