Up through '93 SHO spindle is a stock replacement for what you have. '94-95 is a different spindle that is a popular upgrade because it gets you larger, more effective front brakes; it's commonly called the "'96 brake upgrade". For the brake upgrade, 89-93 SHO's need different spindles and hub assembly, calipers, brackets (usually come with loaded calipers), caliper bolt and pins(come with loaded calipers), pads(come with loaded calipers), bracket bolts, and rotors. The nice thing is all of the parts can be scrounged fairly economically.
From an old post, here is the parts list and various Ford models that can provide them.
THESE ARE ALL CONFIRMED
*****FN74 CALIPER BRACKET*****
96-99 SHO
01-07 TAURUS
95-99 Continental
93-98 Mark VIII.......(not stamped FN74 but will work)
*****CALIPERS*****
94-07 TAURUS/SABLE/SHO
95-02 CONTINENTAL
93-98 MARK VIII
********SPINDLE(KNUCKLE)/HUB ASSEMBLY********
94/95 TAURUS/SABLE/SHO with ABS (Only cars with 4W disk brakes came with ABS)
93/94 CONTINENTAL
*******ROTOR*******
96-99 SHO
01-07 Taurus/Sable
95-02 Continental
**********Caliper Bolts*******
Comes in a packet of 4. Ford part N807146-S103
These are discontinued (what else is new), but I have seen them on ebay. If you pull brackets off an '01+ leave the bolts, they're too long!!! I bought my bolts new, but I'm pretty sure the correct ones will need to come off one of the '99 or earlier cars listed for brackets.