I switched from front drum to front disk brakes on my 70 Coronet. I know that there is no difference on the rear connection. I did order the set built for an adjustable proportioning valve but the tube from the P-valve to the manifold was a direct fit and the fittings were correct too. You could call a different manufacturer and ask if the pieces are the same. I purchased The Right Stuff lines for both fuel and brakes. Just for future reference, TRS is excellent both in product and customer service. I bought them through Summit, too, and they have a free return shipment policy for orders that were incorrectly filled and I have tested them on this. Class all the way.