Rear axels swap

I shall swap my 7 1/4" rear axel to the better one 8 1/4" on the G22 1978
One question arise:
The 8 1/4" seems to have 11" brake drums. My 7 1/4" not sure as the car is stored in our house over in
Sweden. I have a feeling it has 10". Spare brake linings and all fittings bought a year ago.
If so would it be possible to swap the smaller shield and drums complete to the larger 8 /14" axel or perhaps easier to buy
the 11" drums and brake drums and hardware?