Casey, I just did my CDN3 and it has 10", they are stamped 10.060" dia max. I would agree with Brian that 9s are most likely the same. The most important thing is that they are not overly warped. I was fortunate enough to be able to have mine machined around .020 a side (.040" overall)
With brand new shoes I would not sweat it too much. As a sidenote, your CDN2 will require regular brake shoe adjustments anyhow considering that they are manual adjusters.
If you have any issues or are not comfortable, 9" drums are common and very inexpensive.
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3RD Echelon Wksp
1968 M274A5 Mule Baifield USMC
1966 M274A2 Mule BMY USMC
1966 M274A2 Mule BMY USMC
1958 M274 Mule Willys US Army
1970 M38A1 CDN3 70-08715 1 CSR
1981 MANAC 3/4T CDN trailer
1943 Converto Airborne Trailer
1983 M1009 CUCV
1957 Triumph TRW 500cc
RT-524, PRC-77s,
and trucks and stuff and more stuff and and.......
OMVA, MVPA, G503, Steel Soldiers
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