I've been making brake pipes today actually lol, tbh its probably just as easy to make up two pipes bypassing the abs modulators, the rs is diagonally split, so the t piece on the passenger side feeds to the N/S/F and the O/S/R and opposite for the other side.

Im not sure about non rs cars, im using a front rear split system with a bias valve, but others like Puss are (i think) keeping the diagonal split with a mk5 escort in line compensator to each rear brake.....

Not sure if any of that helps but i hope it does