Looking to replace my radiator in 68 camaro 350, manual. I've looked at Flex-a-lite rad/fan kit, to me really high priced and looked at Cold Case Rad/kits for about half the price. Been awhile since having to buy a rad for old cars. The one in it has a 18x18 core seems small. I live in CA and summers get really hot. Any ideas or thoughts are greatly appreciated.

 

I have a 3 row champion radiator with a heavy duty Derale stainless fan (17017)in my 68 that cool a 540 horse small block very well
I tried 2 10" fans that I bought as a kit with the radiator with a shroud and it would not cool
you may also want to buy or make top and bottom radiator filler panels . the air HAS to go through the radiator with them