I need some help here. I have an 87 Zuk with Toy axles and vented Cruiser rotors all around along with IFS calipers. I mounted a Toy mini truck brake booster to it and need to get a FJ master cylinder. I am not sure what to do with the brake lines? Do I re-run all new lines from the master cylinder throughout? Do I need a/any proportioning valve? The Sammy is a strange vehicle as far as proportioning valves go. Thanks. Jim