yes, the EB Interceptor is a better performing vehicle than either the RWD Charger Pursuit or RWD Chevy PPV. Michigan and California's annual State Police testing has shown this over and over again.
(although 2013 testing finally handed Dodge the average road-course lap time victory, but that was for its new AWD system Chrger-Pursuit not the RWD one; the Interceptor was still the fastest 0-60)
I've used this info constantly to thwart the prevailing yet false meme that RWD is always better than FWD or FWD (transverse) based AWD, on various other automotive forums!!!
and yes, of course the manufacturers use the information and engineering on the police cars for their civilian counterparts. the SHO Track pack was heavily influenced and essentially developed off of the Interceptor program, similar can be said for the Charger. its a little different with Chevy and their new SS, as the Chevy PPV police car is quite simialr in platform as the SS (as its Holden derived like the Camaro) but has a much weaker engine and older suspension bits.
IDK if some of you all have noticed, but the SHO is rather routinely snubbed by other auto enthusiasts and even by certain auto publications vs its competition (mainly the Charger RT, the SS is all new). I've seen it be called a FWD-mommy mobile, slow brick, etc. Of course this is a rather ignorant reaction! I use the police sedan testing, where the Interceptor (SHO) routinely defeats the RWD Pursuit (Charger RT) and PPV to show them how wrong they are; but of course logic doesn't work with Neanderthals!