I just ordered a set of Tokico HP shocks and struts and Eibach Sportline springs from StangSuspension.com. The struts that they sent me were the Fox part number. I don't know if it's because I got the springs at the same time or if that's what they sell all the time, but either way the car handles great.
+1000000 on MM products. I have a lot of MM products, including control arms, on both my Mach and Cobra, and I wouldn't change them for anything. I have read several posts on Mach1Registry and SVTPerformance about UPR control arms and cc plates failing under load. I feel that the suspension isn't something you want to fail, whether you're going down the 1/4 mile, hitting some twisties, going around a road course or heading to work. MM quality is top notch!