Brake Question

[zooming993]

Thank you for all the replies. I’m beginning to think this is going to be a bigger job then I planned. I understand the new proportioning valve (PV4) will replace the original distribution block mounted on the frame. As for the pressure hold back valve some have mentioned, I found it, it’s mounted on the drivers side above the axle tube. I’m assuming this valve needs to be removed when I install the rear disc brake conversion, correct? If it does need to be removed can I replace it with a threaded coupler or do I need to replace the entire brake line?

Thanks again for all your help.