Biggest most massive 4 core rad for a 68 Barracuda?

I fought cooling issues in my coronet for six months. I have a shroud and 7 blade clutch fan. This is a 500 inch motor. My Champion radiator sucked. It wouldnt cool it. Temp eventually creeped till I shut it down. Changed to a Griffin with 2 rows of 1.25 inch tubes and problem solved.