Are the drums from a 66 12 bolt rear end the same as a 66 10 bolt? Are they finned or do they look like the front drums? Thanks.

same brakes, backing plates and drums, maybe even wheel cylinders.

rears are of course different from the front.

How are they different? All four of mine look the same.

Front drums are 2 1/2" wide, rears are 2" wide.

Thanks