727?

A-727-RG .
I agree with those whom have opined : "why?"

They're kind of difficult to find ; I've seen exactly one in all my years ; it was in a true oddball , a 1970 Coronet New York Taxi ( WN41C0A ) . 225 HD , 727-RG with Low-Gear Block-Out ( just like police cars had ) . Rusted to its lower "C" pillars .

What made "New York Taxi Package" cars so different ? The rear floorpans ; they were deeper , as N.Y. had floor-to-roof requirements . The cars were shipped across town to Chrysler's "AmbleWagon" facility ( same shop that modified FX cars and performed Ambulance modifications ) , where the rear floorpans were removed and replaced with deeper units .

Off topic ...

Never-the-less , if you're hell bent on putting an energy-absorbing leach behind your 225 , look for an A-727-RG .