Converting from manual 4 drum to manual 4 disc on my 68 coupe. I want to replace my brake lines while I am doing this and I want to order a kit from Right Stuff. What if any are the brake line differences between manual 4-drum/4-disc setups? I think I simply need to order new lines for 4 drums instead of 4 discs as the lines I currently have appear to fit just fine (at least in the front as I haven't dug up the rear yet). The only two questionable plumbing areas are: New Wilwood master cylinder to original distribution block and the other is the distribution valve for the rear. First the Wilwod M/C question that I believe has already been resolved. I got the new M/C bolted on and it looks like there should be no issues at all running the original lines from the new MC to the distribution block. As long as the new 4 drum brake line kit includes these lines (and it should) I am good to go. Next is the proportioning valve for the rear. Assuming I will need one as I don’t think I will end up with a perfectly balanced brake system (I purchased a Wilwood adjustable one), where do I put it? Does the 4 disc line kit perhaps already account for this (maybe this is the difference) hence, the main line going to the rear brakes will be ready for an in-line prop valve insertion? Another way of saying the main rear line is actually composed of two lines that will eventually be joined together via the prop valve? Maybe I got it all wrong…??? Thanks in advance for any advice on this.