So I was at the the MN State Fair and the MN State Patrol had some display cars out. Our state patrol hid a 1979 Dodge St. Regis from being sold as it was the 50th anniversary squad. I was talking with the care taker of the squad and he let me give it a good look over (the car is really unmolested). I looked under the hood and was talking to him about all the coolers these squads had. He then stated "yeah even the fuel pump had a cooler, I had to replace the pump with a normal pumps and block off the cooler lines"

I am wondering was there such a thing that mopar put on the cop car engines or did he have it confused with something emissions related?