I see a post on changing drum size, but why if you have a early rear end put wire wheel hubs on the 8" drum, just re drill the holes, Bob
Sorry hubs
I'm suprized with new small drums available that they can't be ordered with the 5 hole pattern for just that purpose (or at least ordered undrilled).
Thats what I am going to do, no need to change perches, radius rods, brake rods, Bob