the man who use to build all my rads always said it comes down to air movement. the tow truck guys would always want 4 rows or more. he would build them a 3 row rad with a z-ore that you could read through. problem solved. since he went away i tried some of the aftermarket brass. nothing but heating problems. went to the 2 row aluminum and never looked back. the be-cool in edwards 37 is barely the same size as the a/c condenser. only 14 in wide but cools just fine in the texas heat.