Put the quad shocks back on if you took them off or don’t have them installed.
The quad shocks are a roll of the dice. No matter what the combination of tires, control arms and shocks, some cars will wheel hop without quad shocks and some won't. There are so many variables in 34-18 year old cars with wear, misalignment and combinations of suspension components and tires that one unchanging answer won't work for everyone.
I personally would install them, and make sure they are in good shape. I do know this, that Ford is cheap. If they could have made changes in some simple component like bushings or control arm construction and saved $10, they would have done it. Multiply $10 times all the Fox body Mustangs ever made and you would be almost as rich as Donald Trump. That's a lot of $$$, and good incentive to engineer something to do away with the quad shocks.
The quad shocks are a roll of the dice. No matter what the combination of tires, control arms and shocks, some cars will wheel hop without quad shocks and some won't. There are so many variables in 34-18 year old cars with wear, misalignment and combinations of suspension components and tires that one unchanging answer won't work for everyone.
I personally would install them, and make sure they are in good shape. I do know this, that Ford is cheap. If they could have made changes in some simple component like bushings or control arm construction and saved $10, they would have done it. Multiply $10 times all the Fox body Mustangs ever made and you would be almost as rich as Donald Trump. That's a lot of $$$, and good incentive to engineer something to do away with the quad shocks.
Refreshing my memory on front wheel spacing... Even though it's old, I noticed this comment and thought I'd make a correction in case someone else comes along. I believe "more" backspacing, i.e. moving from 5.8" BS to 6.5" BS would bring the wheels/tires towards the center of the car, possibly causing contact issues with the inner fender and/or the A-arms on the front. "Less" BS, like going from 6.5" to 5.8", would push wheels/tires to the outside of the car and would increase the turning arch of the outer part. So, "less" BS would possibly cause the wheels/tires to stick out of the fender or rub the lips on the bumps, and it could also cause the outside of the tire to rub on the front of the wheel well at full lock. It's counter-intuitive because the greater the BS, the more inwards the wheel/tire shift. I think I've got this concept right, but if not, please correct me and show your source.
Greater offset also brings the wheel/tire inward. Negative or less offset moves the wheel/tire outward. More backspacing and/or more offset would move the wheel inward, potentially causing suspension clearance issues with a given wheel.
It's unfortunate that we don't just go with one or the other measurement for standardization. Backspacing makes more sense to use since it is easily measured and does not need to be calculated. Also, backspacing gives you a very straightforward way of knowing if there is going to be a mechanical clearance issue between your suspension and the inner edge of your wheel. Offset does not.