Kelsey-Hayes replacement

You're right, but I'm a big fan of semi metallic pads. About 30 years ago, I had a '73 Charger 400 as a kick around car. The big boss at the time put the kibosh on using company cars for personal reasons. So I picked up this Charger from a kid who worked in the parts department at a DCP dealer. It needed brakes, so I got all brand name Wagner stuff from one of my oil customer's parts store. Pads, rotors, calipers (rebuilt, don't remember by who) hoses, bearings, shoes, drums and wheel cylinders. I was disappointed with the result. My friend said "I told you the semi metallic were better." So I swapped them out. Big difference, just from the pads. The rears were over braking anyway, so I left them alone. What did I know then about adjustable proportioning valves or smaller piston wheel cylinders?
Where I live, I can't drive a mile without someone pulling a dick move. So I'll be using the good pads.
I been running EBC Red brake pads on my original disc brake setup on my '69. Stops good and I don't see any scoring on the rotors. 7/8" rear wheel cylinders help a lot too.