I like the brake pedal modification! How solid does it feel? Are you using the stock plastic bushings on the pivot? Only reason I ask is there's a guy on here that sell bronze brake pedal pivot bushings that may hold up a little better over time.
I have a CCP brake booster kit and it comes with a plastic bushing and steal inner race, but it doesn't match the pedal bolt so I have not decided what I'm going to do at the moment. As for the pedal feel its nice. A bit of flex from the booster as I was waiting till I had the pedal and steering sorted before I weld in bracing for the left side of the booster mount to the left side of the pedal / steering box. If you look in the pictures you can see a piece of Angle iron and 2 Allen head bolts. These will all be sold mounted to the pedal box for more rigidity once I'm finished under here.