I'm ordering parts the first of the week Headlights,grill,header panel,bumper,upper valence, will my bumper brackets work from my 00 bumper what wiring harness do you all recommend any input is greatly appreciated

 

im lookijg into doing the same conversion except I have a ranch hand replacement bunper. anyways from the reading ive done the 05-07 bumper uses the same mounting mount as yours, the only reason to change to the updated bumper is so that the lower part of the grill mounts to the bumper.
and you can get the headlight conversion harness from dfuser.com