I have a set of spindels and hubs from an 02 roush will these work on my 92 LX also have the calipers and hoses. What size rotors do I need for this set-up?
The spidles should be the same as the 96-04 Mustangs, as I don't think Roush changed anything but possibly the calipers/rotors. What do the calipers look like? Are they aluminum with two full circular cut outs (Cobra style 13" brakes) or aluminum with partial circular cut outs (stock Mustang 11" brakes)? The caliper type will tell you what rotors to get. And do the calipers include the brackets and mounting bolts? Roush cars came with either stock brakes, Cobra brakes and I believe even brakes a step above the Cobras.
Read up on http://sn95brakes.com and you can find out all the parts you need to use them on a Fox, basically an adapter for the passenger side hose and spacer for the ball joint at the minimum. A better MC and booster are other things you probably should consider.