[JST A 6]

I just thought of something else--Kirban's conversion kit description doesn't say anything about it coming with a new brake pedal, so when he mentions doing the drilling he may be talking about converting your original brake pedal for use with the vacuum system (where the pedal attaches to the rod.) If you're doing the conversion without buying the kit I'd suggest getting the pedal from the donor car (as the previous owner did for mine; I still have the original Powermaster unit including the brake pedal) and just see how everything fits as you're putting it in, that way you're not enlarging any holes that don't need it.