Thanks 73 Shark and F4Gary

I appreciate the info.  To be honest its over my pay grade but io will share the ideas with the shop I go to.

Jim

UPDATE!  Thanks again for all who posted ideas and suggestions.  I did end up replacing the original radiator with a DeWitts Direct Fit aluminum radiator.  It was past 52009 from Top Flight Aoto and it fit perfectly.  I replaced the hoses and shroud foam with part number 39859.  The net result is that the car runs perfectly with the needle indicating a steady 180 degrees.  My only regret is not having done this 2 years ago.  Thanks again to everyone that offered advise and assistance. 

Thanks for the update! Glad you got it resolved!

 On my '72 350 base with A/C, I had the original tanks fitted with four row tanks 22 years ago. Stock fan and clutch.  The temp gauge bareley goes past the first line, just past it in traffic... I live in Los Angeles...