2004 IMPALA 2004 Chevrolet Impala 9C1 Police Package with a 3800 V6 with a Heavy Duty GM 4t65e-HD Auto Transmission with 3.29 final drive ratio. 158,xxx miles. Newly replaced transmission with a 90K mile from a 2004 9C1 Impala, ew both side tire rode.The 9C1 package also includes features such as 125 Amp Alternator, xternal oil & power steering coolers, versize radiator, ultiple wiring access points, nd Special PCM calibration. The interior features rubber floor covering, ucket seats with internal steel plate and vinyl sides/back/headrests, ront/rear seating materials (vinyl/cloth) optioned separately, 40 MPH certified speedo, uxiliary tactical dome light, ull-size spare, 00 amp power feed & ground stud in trunk, nd various options for wiring, nd flasher relays。 The car runs great!