Summit radiator SUM-380459

are year ones brasss or aluminum??? im looking for a 4 row,,or a 2row with 1 1/4 or 1 1/2 inch tubes,,aluminum not a cross flow,, butone that looks like almost factory style tanks,,,,simular to the ones mancini sells,,,i havent found one cheaper,,then mancini,,540.oo green backs,,,,ouch,,,