I was fairly surprised considering that a common police cruiser has at least 4 times the mileage in just idling time. I have had to replace the oil pressure sending unit, the exhaust system, and nothing more than routine maintenance. When I purchased it the taxi company had just clipped the wires so I spent about three hours studying the wiring diagram and splicing.
It handles like it's on rails, I added oversize tires and rims. You'd never expect to take an offramp onto another highway at above 70mph acceleration.
Heart pounding acceleration, nothing like a Corvette, but makes the guy in the Mustang frustrated. 50-110 is a complete blur. Also, if you're not careful you'll be doing 65 in a 30 pretty quick.
Turning radius is a another boon.
But gas economy is not good, Also the cooling system is made to work for 24 hours a day, so for the short jaunts the heater takes a while and doesn't really warm up for a couple hours. Expect 9-20 miles per gallon on 93 octane... Depends on your right foot.
Replace the thermostat (and flush the cooling system if you haven't already done this) and your heater will warm up a lot faster. I know; I had the same problem with my '91 Caprice Classic. What a great car!!