DSE reduced angle booster brackets

[workng247]

Been looking, can't seem to find out what I'm looking for. Maybe its common knowledge but I don't know it so I will ask.

When using reduced angle booster brackets (like DSE) on a 69 camaro, will the stock pedal need to be drilled? Seems like the existing upper manual hole would be too high and the lower power hole would be too low. Would a 3rd hole have to be drilled in between to maintain proper booster rod geometry?

Thanks