Apparatus for sizing a component shell having at least two different cross-sections

An apparatus for sizing an exhaust component having an outer shell defining a center axis extending from a first shell end to a second shell end, a first substrate positioned within the internal cavity at the first shell end, a second substrate positioned within the internal cavity at the second shell end, and at least one sensor hole formed in the outer shell between the first and second substrates, the apparatus comprising:

• a base coupled to an actuator;
• a plurality of discrete fingers to surround the first shell end to size the outer shell about the first substrate to a first cross-section and to surround the second shell end to size the outer shell about the second substrate to a second cross-section, wherein the plurality of discrete fingers extend axially from the base and are circumferentially spaced apart from each other about the center axis;
• wherein each of the plurality of discrete fingers is defined by an axial length that extends from the base to a distal finger end, wherein the plurality of discrete fingers comprises a first set of fingers and a second set of fingers, each of the first and second sets of fingers including at least one extended finger having a longer axial length than the other fingers, and wherein the first end of the outer shell is sized to the first cross-section with the first set of fingers, and the second end of the outer shell is sized to the second cross-section with the second set of fingers.