Just put 4 KYB's on my 79 300/Cordoba, Replaced the old Excel-G's on the front with new ones and Gas-A-Justs on the rear replacing what appear to be Sears load levelers (with the big springs) which were on the rear. Those rode like an empty dump truck. The new KYB's are real nice. The 300 has a pretty firm suspension but it's still basically a Cordoba so it seems to be good combination with the KYB's. I did lose the lifted rear end look the old load levelers gave it. Now the stance is level.