I am installing a RE 4.5 inch Superflex kit in my 03 Rubi. I have the rear totally installed. I used the rear track bar relocation bracket and now the rear axle is off center by around an inch or so. Do I just have to wait for the springs to settle or should I dump a hundred and a half on their track bar. Do you think it will center after the springs settle?

you could drill a new hole to relocate it over some I did this for a 5 inch lift on my 00. For the simple reason that I have about 130$ into the lift and wanted a cheap temporary solution til the RE longarm later this winter.

Rear adjustable track bar is your answer.