Yes I did the same, a truck 1&1/8 dual bowl MC with the plastic reservoir. I used a reducer bushing in the MC rear port to connect to the single OE 1/4 line which goes down to the splitter as normal & feeds the front discs then I ran a new 3/16 line from the MC front port down to the splitter area & unscrewed the rear line from the splitter & connected the new 3/16 line to it with a double female connector then plugged the open port in the splitter that the rear line was screwed into with a brass plug. Worked great & the rears would lockup first if I got on it but for a DD it worked awesome & I forgot to add that reportedly the prop valve delays the onset of front braking slightly till the rear shoes are making contact (??) but in my case front pad wear over time was not even noticeable.