there's complete info on here some where for special service vechiles...from what i can remember they have heavy duty radiator/fan clutch..trans cooler, reinforced floor pans, 160 mph speedo.
Oil cooler (optional)
HD tranny cooler
HD fan clutch
130 amp alternator (optional)
Body, hood, and decklid bonding straps (optional)
140 or 160 mph (depending on year) calibrated speedo
Reinforced floorpans
Interior, courtesy light disabled (optional)
HD control arms
Various body molding and emblem delete options
Non-Standard paint options
Unlike most police vehicles, spotlights were not an available, factory option on the SSPs. They got their spotlights installed aftermarket due to Ford engineers' concerns about weakening the A-pillar.