1968 chrysler 300 front wheel cyl (drums)

How do I get the front wheel cyl off of my 300? It's got drums, and I've not had a drum front brake car before. I can get the rubber hose off, and the rear bolt, but on the front bolt there's not enough room to get a wrench on it. Anyone here have C body experience? I really can't see a service item like a wheel cyl needing the backing plate removed to get it off.
Thanks, mike