today i had too change my alt that went and decided i would put my beutiful new $650 efans on ,stripped it down ,put brackets on and what do ya know iv got the small radiator .my fans are flexalite duramax diesel fans ,nice unit ,im going to have too doo some fabbin but no bigge .my question is what radiator do i order ,i know its the bigger one but what appl,do i ask for .mine is 04 gmc sierra 1500.thanks ahead.