Wat a sec, are you taking off disks and putting drums on????? I think you meant to say manual disks, I changed my master cylinder to the disk master cylinder. I'll start the arguement, the drum MC will lock the front disks..it did mine and they swore at NAPA that it was a direct replacement. Just get the whole package from the donor car, MC, spindle and brackets, upper control arms, calipers and the proportioning valve from the inner frame.