Problem is the center register on that small bolt pattern hub is smaller than the larger bolt pattern (LBP). So a LBP drum won't center properly.
If you replace these, you'll have to drill out a set of SBP drums. And same with rear drums too.
Probably don't drive this everyday so not a huge rush.
Might find a conversion at Spring Fling show/swap in April. I know McKellar's from Bakersfield will be there with new disk and axle setups (for 8 3/4). Used disk conversions are usually there for sale and might find a used large bolt 7 1/4 if that's an option.
