1968 Barracuda Cooling System Upgrade Questions

Like @autoxcuda said, best to go with the factory stuff.

Before buying a fan and fan clutch, pull the radiator and have an old school radiator shop flow test it and pressure test it. If it doesn't flow well, they may be able to Rod it out.

If that's good, source the parts in the last post. A shroud is almost a necessity. The hood to core support seal will help keep air flow through the radiator.