Well, this could end up with the "snowball effect".
Back when I did a booster add-on, I also went the whole hog and added bearings to the clutch pivot from Mustang Steve (Scott Drake make a set as well). This really smoothed the clutch operation. I went a step further and added oil-lite bronze bushings to replace the plastic bushing in all the linkages. Doable for sure, but a lot of work and totally worth it imo.
As for the booster, here are a couple of pics of the opening after I drilled out the old studs. Of course, I removed the entire hanger bracket. On the brake pedal, Mustang Steve supplied a replacement pin that I welded in 2" down from the manual pin. see pic. I think a pin can be bought that either screws in or has a nut and lock washer on the back.
I went with SSBC 4 piston brakes and actually ran these for years before adding a booster and to be honest, I didn't notice much difference. I do use an adjustable valve for the rear drum brakes, so they are totally separate from the front.
Did Jeff supply disc brake spindles? Maybe I missed that bit.
