If you take a look in my bolt bucket (below) you will see dual MC, disc brakes and the new square hole you need to cut out to fill the MC. CPP (Classic Performance Products) is the vendor but I went thru Brothers Truck Parts. Their catalog has everything you need. I am sure there are others, but that was my experience.
The nice thing about dual MC is you are totally separating the front from the back. I just felt that while I was at it, a person could take that opportunity to add the disc brake kit.
