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Actually this will work just fine , I have done this often on pre 70 cars where the caliper will interfere with the sway bar BUT you need different calipers to accept the banjo type hose & with pin cailpers not sliders you may need different caliper mount brackets too , I do not recall a pin type caliper with banjo fitting . SO you are probably better off to just swap the caliper to the front in this case .
Yes it's been made to work, it still isn't the right way to do it... If you want to rear mount the calipers the steel line should be re-routed to the front....