fwiw,,champion raditor in southeren ca.sells a bolt in aluminim.raditor,3 row for less than 300.00for a chev,my truck is a junker gmc,with a 250 6 cyl.they moved the fill tube from the top ,to the front.total 315.00 down side,,no room for stock fan.i am using a 15inch elect....my message for the day bro..