2005 Pontiac Grand Prix GXP VEHICLE TYPEFront-engine, front-wheel-drive, 5-passenger, 4-door sedan PRICE AS TESTED$31,135 (base price: $29,995) ENGINE TYPEPushrod 16-valve V-8, aluminum block and heads, port fuel injectionDisplacement: 325 in3, 5327 cm3 Power: 303 hp @ 5600 rpmTorqu...