Differences from your 2001 and the SVT include:
Upper (and possibly lower) intake manifold
Fuel rail and injectors
Cams
Pistons (higher compression in the SVT)
Throttle body
Engine computer programmed for higher octane (more timing advance)
You are on the right track, but the only place that can trip you up is the lower intake manifold and fuel rail/injectors.
True, the 98 SVT fuel rail and injectors will not work with your car. Your lower manifold might already be the same size as the lowers on the early SVT's, I'm not sure. You can buy the lower with returnless rail/injectors from BAT.
Going to 19lb injectors, however, is not going to buy you anything unless you've done some serious mods to the intake/exhaust. More fuel does not automatically mean more power. You have to have the air flow to go with it. Unless you are exceeding 170 wheel hp, you do not need 19lb injectors.
-Lance