Pure5.0

Subframes would help out a car even if it werent in an accident.

I had a sagging left side too. It was sagging about 1" lower than the right. Of course only I could notice. I changed the shocks in the front and that leveled it out. I found out that my car (well I discovered from looking under the car real well) that it might of had an incident with a curb or ditch. Which caused only one shock to be replaced. Because shocks loose their properties with age and wear one was holding the car up and the other was sagging more.

So replacing the shocks helped out a little. But didn't fix the problem. My shocks weren't bad enough to see it bounce when I pressed on the sides hard.

I then installed full lenght sub connectors and that helped out a lot too. I still have a slight sag but only I can tell because I have a vision that can see aligned objects....curse if you call it.

So no one else can tell but I only can because I knew it sagged.

Also the mustangs werent made very well to handle the torque they put out. When you accel hard the front left rises the most. Well after time the car starts to become fatigued and your floor pans begin to bend causing the car to sag in some corners. Also because of this wear on the front left from accelerating the shock tends to get worn faster...leading to sagging.

So check your shocks and get sub connectors. If this doesn't fix it then look under the car and start measuring the components. If they are the same it could be bushing causing it to go bad.

I would check the springs last. Yes they tend to sag over time but other components tend to wear faster then springs....