brake drum help needed

["Jim Blair" <carnuck@xxxxxxxxxxx>]

 Trying to find a drum for my buddy's '84 AMG tomorrow. I thought it was the
same as FSJs (same Model 20 axle and 6 lug pattern) but the drum was 11" x 2
1/2" and FSJ is only 11" x 2". It has a casting numbers of KH-5 and 09321001
on it but no NAPA cross references (or Olympic Brake supply warehouse)
worked on it.
   This would make a good brake upgrade for those of us still running Model 
20 1/2

ton axles with 6 lugs. (drum also says made in Canada)