i first lowered my 64 by cutting the front springs,but it put the a-arms at weird angles,so i am using 2.5" drop spindles and 1" drop springs on front and 5" drop springs on the rear.im nowhere close to needing a c notch.stock shocks on front and aftermarket shocks on the rear with relocater brackets.i have a 1980 swaybar on front with lowered brackets.the truck SEEMS to out handle my camaro.i kept the stock panard bar.the tires seem centered.of course a 65 panard bar is different.