Ok, new guy here...but old guy with old cars. I have a barn find '66 coupe, 289, all #'s matching that I am restoring and plan to use spindles from a '68 coupe for disk conversion. I have not taken any measurements yet, but I have heard that to do so, I should use '70 rotors and calipers. Any thoughts on this? I have the spindles, calipers, and caliper brackets for the '68. What other conciderations should I make for this?