Rear Wheel Drive.
My dad had a mustang from around that timeframe late '80s or early '90s. I borrowed it while visiting for christmas, and it was challenging to drive in icy weather, it takes a gentle foot with V-8 power and RWD to keep the car pointed where you want to go, and it was sort of piggish. By that I mean it isn't like a neutral-balance car that you can easily steer with the throttle, it would be understeering/pushing with your foot off the gas, and oversteering/spinning with your foot on the gas, and you are lucky to find that neutral point in the middle somewhere.