I used the same pos pipe bender I used to bend my bumper and fenders, used sand to fill the pipe when I did the bumper but used water this time, way easier and faster. how did I figger the angles? eyballed it, got what I wanted for each piece one side and made another to match, then bent the next piece and so on. They came out damn near exactly the same after final welding and layed on top of each other.