My views on my top 5 are pretty reflective on what I put here for the basics.
If I had a Viper (still dreaming):
1. Smooth tubes/ K&N filters
2. Snake-Oyl or Corsa cat-back exhaust
3. MGW shift knob with short shift kit
4. either "Porsche for breakfast, Ferraris for lunch" or
"I'd rather be...oh wait I am" lic plate frame
5. minor cosmetic mods- painted hood pad, painted
letters on hood and rear, clear side markers, painted
cowl, interior knobs (Snake-Oyl), stripes if it's
not on there.
That's my top 5, but I'd also like to get wheels and tires, supercharger, possible paint job depending on the color of the Viper I land on, and maybe brakes (rotors and pads) depending on if I'd track it.