The GT received an upgraded sound system and a rear spoiler was made standard. That is about the extent of the changes to the 1998 model year GT versus the 1997 model year.
The optional Mach 460 sound system and the extra 10 hp from the 4.6L SOHC V8 engine were welcome changes to the 1998 Mustang GT but we always want more and Ford let us down yet again on that front.
As expected, the 1998 Mustang GT came with 16 inch cast aluminum wheels, lower valance integrated fog lamps, single rear wing spoiler, racing cloth front bucket seats, leather wrapped steering wheel, optional upgraded rear axle.
In the engine compartment, the 4.6L powerhouse was tweaked and now had 225 hp. The increase in power came from an updated exhaust system and changes to the headers, which coaxed that extra 10 horsepower from the GT.