I still can't find any info on the threads, but the hose that connects lever and caliper has fine 8mm threaded connectors, and the crossover hose has coarse 6mm connectors. The magura and shimano olives look pretty similar in size and shape. I'll take my old hoses to the LBS tomorrow and compare against the new shimano ones he has. I'm hoping that the shimano hose will have the same 8mm threaded connectors, or if not, that I'll be able to use the shimano hose but with my existing magura connectors.