get a Weapon R 4-2-1 header .. it comes with an S-pipe
weapon r header scion tc - Google Product Search
Agency Power Lightweight crank pulley
Lightweight crank pulley scion tc - Google Product Search
AEM or Injen Cold Air Intake are the best dyno'd that i kno but its your choice
Cold Air Intake scion tc - Google Product Search
if u just want an S-pipe i'd go with Invidia but again it's ur choice
S pipe scion tc - Google Product Search