Let's see what I can remember.
Air filter different with larger intake tube. Larger throttle body. Extrude honed intake manifold. Extrude honed intake ports on heads. Hotter cams. Higher compression pistons. Different exhaust from the cat back. Larger radiator. Revised PCM calibrated to the differences.
The block, crank, and rods are regular production pieces, but hand selected for SVT use.
Non engine SVT items include SVT ground effects package with air dam front and rear bumpers as well as side rocker panel skirts. Unique interior with perforated leather seats. One of the interior colors is nearly unique to the SVT, Midnight Blue. Larger front brakes. Revised suspension with slightly different struts, springs, and sway bars.