they never made BBP front drums for a bodies. if you wanted
bigger drums, some cars came with 10" brakes vs the 9's which would entail grabbing a whole spindle set up.
which gives you okay stopping power and a parts supply that is rapidly drying up. i mean, the consumables are still available, but if you need a hub you're searching the net or scouring swaps, yards or looking for take offs.
a 73~76 factory disc set up gives you BBP and is no more complicated than a drum system, and has TONS of parts availability.
out back, you can call up doctor diff and he can provide BBP axles for your 7.25
[URL]https://www.doctordiff.com/axle-pkg-7-1-4-mopar-5x4-1-2-bolt-pattern-pair.html[/URL]
honestly though, you'd probably be better off upgrading to a different rear end that is not only stronger but has better parts availability. 8 1/4, 8.75, or a ford 8.8 out of a ranger for drums or out of an explorer if you want discs.
upfront the swap is fairly straight forward, i'd say no more difficult than upgrading to larger drums, and there's lots of options for upgrades in suspension components and in the braking components as well.
the one thing i would do, if it hasn't been done already is 100% upgrade to a dual master instead of the factory single pot.