[jocko]

if running disks and drums, you need a disk and drum mc (so yes, a 71 or 72 will work), and, ideally, proper sized lines. 3/16" lines to the front disks and 1/4" lines to the rear drums. It would work with all 1/4" lines like your 70 was born with, but not the factory solution - so, since you're ordering new, order the 71/72 set. Since it sounds like you're ordering a custom brake solution and are ordering lines from CPP or POL, might as well order the correct disk/drum mc (and a prop valve) from them as well. Factory only had a distribution block but since you have a somewhat custom arrangement, the prop valve (or, probably more appropriately, a "combination valve") will give you the most tunability.