uppersshould be the same for those years. I think a nice set of tubular ones from Magnum force is 300 bucks and they have the stock type screw in bal joints and poly control arm bushings preinstalled.
Lowers were changed in '70 as the sway bar pass through the k bar and mounted to the lower control arms at a different point. '69 and earlier had the hoop bar that passed over the k bar, if I remember right it is hard to find aftermarket sawy bars for the older ones. I swaped my entire lower setup out on my '69 in order to run the discs and sway bar package I wanted
'69 Road Runner 383 going to 440, 6brl hood, likely gonna race it
'70 Challenger R/T clone 440, 2nd owner, 300,00 miles on body, not kidding
'92 Cummins 1 ton, in need of restoration bad
'79 360 1 ton flatbed-for sale
'01 WS6 T/A- for sale