One thing to keep in mind when it comes to radiator selection a copper and brass radiator of the exact same size as a all aluminum or aluminum and plastic tank radiator the materials in them will determine which will cool better, brass and copper work better for cooling shruggy scope
Been there done that with a Griffin cooper and brass versus aluminum of the exact same size and construction other than cross flow versus vertical flow whiney

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)