91C and 9C3 are the police package rpo's and 9C6 is the taxi, so if your looking for certain parts it may be easier to find the taxi or just gmpp that ****, but these are all gm part number, use them to what you will



The police sedans received the FlexFuel feature to compete against the Ford Crown Victoria Police Interceptor, which also received a similar feature allowing it to utilize E85. Also updated were the 9C1 and 9C3 trim levels for the Police Package models, which did not have the civilian SS's 303 horsepower (226 kW) V8 engine, but used the 3.9 liter (237 cu in) V6.[28] The reason being the Police Sedans utilized the SS radiator and cooling system as an upgrade from the standard 3.9 liter engine (used in the Impala LTZ). GM did not wish to design a specific radiator and cooling system to equip a low-production V8 police vehicle. Also, the heavy-duty steel wheels were not redesigned, and as such, the Police Sedan used the original center caps or the older style wheel covers. The 9C1 and 9C3 were equipped with an external trunk lock tumbler. Neither feature was available for the civilian version of the car. The 9C1 and 9C3 police models had aluminized interior trim instead of the standard wood grain.


Radiator (1/8 Increased Tube Size and Surface Area, 1 Quart More Water) 52478255

Aux Transmission Cooler Package
Set Part Descriptions Part Numbers
1-7. Hose, Tran Fluid CLR Line (W/Pipe to Aux Cooler) 10416317
2-7. Screw, Hex W/Flat WA (Trans Fluid CLR Pipe Clip) 12337828
3-7. Bracket, Trans Fluid CLR Pipe 10227107
4-7. Pipe, Trans Fluid Aux (Upper from Aux Cooler) 10254586
5-7. Nut, Hex W/Con WA 6x1x5.5 OD ZP9 (Trans Fluid CLR) 11517293
6-7. Cooler, Trans Fluid Aux 10275682
7-7. Bold, Hex W/FL WA, TAP, M8x1.25x20, 6202M, POR, 14.2 THD, TR FT, 24 OD (Trans Fluid CLR) 11513894
[COLOR="Red"]GM Document ID: 1666160 [/COLOR]Transmission Fluid Auxiliary Cooler Replacement


125 Amp Alternator 10288764

Sway Bar Package
Set Part Descriptions Part Numbers
1-3. Front Sway Bar 10404184
2-3. Front Bushings x2 10403188
3-3. Front Bracket x2 10294949
1-3. Rear Sway Bar 10274610
2-3. Rear Bushing x2 10415925
3-3. Rear Bracket x2 10257809

Aux Power Steering Cooler Package
Set Part Descriptions Part Numbers
***** Still doing research on this ******
1-?. Cooler, P/S Fluid Aux 26083109
2-?. Pipe, P/S Fluid CLG (INCLS 8-9) 26081253
3-?.


Looking for the oil cooler numbers if anyone knows them?

[COLOR="red"]GM Document ID# 1653086[/COLOR] (Auxiliary Engine Oil Cooler Replacement)

_________________

Interesting.

_________________

2004 Grand Prix GT2: cone air intake, rebuilt HD transmission, rebuilt camshaft, rebuilt top, repainted black rims, rebuilt suspension, slotted/cross drilled rotors, Pioneer AVIC-D3 TV stereo, and more!

didnt they also recieve the gmpp stb's, sway bars, and trailing arms?

_________________

DIY intake-HV3-3" catless dp-180 tsat-DIY shift kit-murphy custom tune

only the trailing arms

the strut bars are hit or miss

_________________

92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

Trans cooler looks like a good idea!

_________________
'99 GTP Coupe...modded summer ride
'98 GTP Sedan...Daily driver
'97 GTP coupe...gone, but never forgotten!