No need to replace the rear band. Any kit with Raybestos or Borg Warner frictions will work. Its wise to wrap the front clutch piston seal with a large hose clamp and put it in the freezer before installing. They can be a bear. Air check the clutcth's on the bench before total assy. Drill a hole in the bench large enough for the reaction shaft to go thru. Set the the pump and both clutch assy's face down. Then air up each clutch thru it's pump feed hole.
Doug