68GT350roadracer - sorry for the delay in getting this to you. I had 90% of it composed on Saturday and then touched the wrong key on my keyboard and erased everything.
Front brakes: caliper# GK-120-4997, rotor DK-300-3099, 11-3/4" diameter, 13/16+" thick, rotor surface set back from hub face 1-7/8"


Rear brakes: caliper# EN-120-5005, rotor DN-170-6240, 12" diameter, 13/16+" thick, rotor surface to hub face 3-1/16"



I can't find numbers on some parts without disassembling them. From what I can tell, these are all obsolete part numbers for the Dynalite series brake systems. I would guess there are newer part numbers for brake kits that would work on these cars with 10-spoke standard offset rims. If it helps you, the front and rear brake kits that I am using on my project car are; 140-9918 and 140-7140. These will work with 15x8 with 4-1/2" back spacing on the front and 15x10 with 5-1/2" back spacing on the rear. ~Kevin