If you get a crankshaft for/from a manual transmission engine the pilot bearing (p/n 53009180AB) will have to come out. The parts manual shows a sleeve (p/n 4736283AA) that I suppose is for the torque convertor snout.

StricNine

79 Li'l Red Express, 15.04 @ 89.57
09 Challenger R/T, 11.95 @ 115.92