kelsey hayes part and proportioning valve

1969383S said
The distribution block, lines and hold off valve all came from inline tubes. I opted for the standard lines and not SS. Direct Bolt on plug and play. I did not trust any of it as being nearly 50 years old when the resto was done.

Well, just went and looked and now im REALLY confused..My car seems to already have this proportioning valve..even though it has 4 wheel DRUM brakes..SO, does this mean im good to go with the disk conversion without changing that stuff?