I have owned 2 mustangs. Fiero's have countless electrical problems? BS! My 5.0 cost me $800 to have the electrical system fixed and my 4cyl. cost me about $200 to have the electrical systems fixed. The old mustang hatchbacks have the worst electrical systems I've ever seen. Most of em wont handle a 40watt amp. Out-handle a fiero? BS! on a sheet of ice maybe...simply because there is no weight in the front end of a fiero. Don't get me wrong. I Love mustangs. But if your looking for a reliable car, a mustang is not the way to go. 90% of them go through rears like they do gas. Like I said, my 5.0 cost me $800 for the electrical system, $200 for a a USED rear that I put in myself to save money, 200 for a USED transmission that I also put in myself, but I'll give my mustangs one thing....not one damn thing ever went wrong with the way the motor ran.
If you want my opinion 454, I'd say don't buy a mustang, don't buy a fiero, and go get a metro cause that's all a jackass like you deserves to drive