[SCOTI]

Originally Posted by hatzie

The mid 1990's 92-96 Cop/Taxi package (RPO 9C1 or 9C3) B-Body Caprice and Impala SS had rear disc brakes and 4 link coil spring solid axle rear suspension.
The B-Body Caprice and Impala ended production in 1996. The only big V8 cop/taxi cars after that were the 1998-2011 Ford Panther platform Crown Vic
There was no such thing as a 1997-1999 Caprice or Impala.
The 2000-2019 Impala was FWD. I believe the Impala has disappeared into the sunset again.
The 2011-2017 Caprice PPV was actually a RWD Holden model that came with a 6.0L V8 & 3.6L V6 but it's significantly smaller than the 1990's B Bodies. Closer to the 06-17 W body Impala.

I believe the B-Body axles are narrower than truck axles.

Just a quick Google found this so accuracy would need to be verified:
https://www.impalassforum.com/thread...nsions.556337/

There are 3 different widths, 1566mm, 1598mm (both sedan), and 1642.5mm (wagon). This discussion is primarily about the sedan axles. I "believe" that the width dimension refers to the distance from axle flange to axle flange--without disc or drum thickness added on.

The 1566mm axle (61.65") is used on 8.5" axle applications only, with both disc and drum brakes, depending on the car (taxi = 11" drum with 2.93 or 3.23, police = disc with 3.08 or 3.23)

The 1598mm axle (62.91") is used on 7.625 & 8.5 applications, both disc & drum, 2.56, 2.93. 3.08 & 3.23. Impala SS is the ONLY 1598mm axle with rear disc brakes, and is the only wider axle that used 3.08 ratio.