I am currently running drums on all for and have not used a porportioning valve I don't know if it was necessary but I fornd I had the realcyl going to the front brakes. Didn't work well. IO switched the lines for a big improvement. I also will look at ECI this winter for the change over on the front. I know the valve will be needed there. Is it simpler to use the adjustable one or will a stock valve work just as well??
