KH brake upgrade

Sorta disagree as the original style hold off valve is still readily available as well all the lines needed. It is not adjustable though.

If I did not want to keep my 4” bolt pattern wheels I would have gone to the later units. IMO the KH setup is not that great and would be happier with some good old drums. These KH front discs have been a disappointed from the day I bought the car in 1984. On my resto in 2014 “everything” and I mean “everything” has been replaced with new components and lines and at least 3 different masters. I could stop my B body with drums much faster! I had really believed that after every piece was replaced and fetered this would be great, but still have the disspointment of 4 piston calipers that work less than some simple drums.

Do you have the correct bolts for the calipers?