Not sure if you mentioned which alum radiator you went with but I would recommend the ECP one.... https://www.speedcooling.com/26-Big-Block-Mopar-Radiator.html This is what I have and with the MB fan, the depth of both is 6 - 6 1/4". This radiator has 2 rows of 1" tubing. Price is nice, fits like stock and looks good, especially when painted.