So i just got done putting in the ZCarDepot rear sport disk kit and i also ordered the MSA 4 piston caliper kit. I also put in a 1" wilwood master cylinder and a brand new booster. I know i need to put my new proportioning valve on the rear brake line. but the question is ive seen a bunch of posts about the stock proportioning valve needing to be hollowed out. but no ones done a full diy (with pics) as far as i can see. The few posts ive come a crossed, ive had people arguing about how it is or isn't a proportioning valve. the picture below is this the stock proportioning valve ? Or is it a distribution block ? Or is it both ?... Do i just pull all the parts inside out or can i just delete this item ? Long story short where is the proportioning valve (Pic please) and what needs to be done so that i can take my car out without having the brakes constantly rubbing or having bias issues ?
My car is a 1972 240z BTW i know some years are different... Also this is not my car. its a 260z but the pic shows what im asking about.