57,
You will probably find as many opinions as there are replacement kits out there. You can make the stock brakes perform OK with new parts. It all depends on the intended use. After rebuilding and/or replacing everything on the stock system I still did not have the confidence to compete with the maniacs on the So Cal freeways. Ultimately I upgraded to a 5 lug front disc brake system with a dual diaphram booster, dual master cylinder & proportioning valve (mounted under the truck). I don't hesitate to drive it anywhere.
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