One issue to be aware of is that they will use both standard and metric on the same part. I just did a brake job on a 59 car, the mount holes were tapped standard but the bleeder screw was metric. The parts came from Napa.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine