Had some spare time today to make and connect up the new brake lines plus made a bracket for the brake proportioning valve as previously it was mounted directly to the old hydraulic handbrake, the system had already been primed with fluid prior to me getting my hands on the car but I've discovered what I think is DOT 5 brake fluid
as its purple in colour, I'm looking if its at all possible to flush out the DOT 5 then fill the system with Dot 4.