When I talked to Maire Racing in Hayward, he said to spend a good amount of change on your shocks and struts (I.E. Bills., Koni) and springs. I wouldnt recommend the adjustable lowers, because they are a PITA and unless its your race car its not worth it on the street. They also recommened (as well as maximum) to use the stock uppers or the SVO and use a rubber bushing on the chassis side and a poly bushing on the rear end side.
Ford allows about a 3-5 inch play on the rear end to move side to side. Which is why a
panhard rod is great, it eliminates any play. Also when choosing your sway bar, make sure they match your springs. If your sway bar is to rigid it will make your outside spring softer because it has more "strength" to push it down, and it will decrease the weight on the inside tire, which would result in a smaller tire patch on the inside. That would cause the car to oversteer alot more.
For the front
suspension. If you dont want a strut tower brace, you can get a k-member brace, which attaches under the car. Once again, unless you autocross the car every weekend, you shouldnt need to increase your wheel base, like what is offered by Griggs, Maximum, and KB. Besides the fact that you will have to roll our fenders, you will also have to ditch your the plastic in your wheel well (spelling). When and if you buy a k-member they might have a second place for your engine mounts, which set the motor back about 2 inches, which in turn moves your center of gravity towards the middle of the car. Mostly the K-member and A-arms will save weight.
Did you know that a stock fox with sticky tires and decent shocks and struts, and springs can almost pull 1G? at least thats what the guy at Maire told me.
Maire racing specializes in mustang
suspension.
My suggestion, is to buy a good set of non adjustable
lower control arms, SVO uppers with corresponding bushings and a maximum
panhard rod. Of course assuming you get good shocks and struts
hope this helps, and please someone clarify anything I have said, that wasnt correct.
james