Power to Manual conversion questions

The stand-off brackets of the 2nd drawing raises the booster/MC up so it clears the left valve cover of V-8 small-block engines. All slants I have seen in the U.S. use the same brackets, though not sure that height was required. The plate of the 1st drawing still has the lever assembly, so also moves the booster up. That looks like a simpler solution, so wonder why U.S. cars didn't use it. Probably had to do w/ interference in our left-drive cars. There were many clever adaptations in right-drive cars for the Commonwealth market. One Malaysian owner posted photos of his interesting 1964 slant engine bay. BTW, Chevy cars were even simpler. Instead of a lever setup, they just angled the brake rod upward to get to the booster, also at a higher centerline.

Most people prefer a 15/16" or 7/8" ID MC bore for manual brakes, especially with front disks. I used an MC from a 95-99 Plymouth Breeze w/ ABS (2 ports) on a 2-4 bolt adapter plate, but many choices. Many here use one for a late 80's Dodge truck.