Skip the Takeda, worthless, look at Injen or Stillen for intake
Exhaust: Stillen, Fast Intentions, Berk are pretty popular. The others do not get the attention as those three here but there have been a few who have picked them up.
Besides CBE you might consider high flow cats or long tube headers if you want an even bolder sound note.
the370z.com's Exhaust Quick Reference Guide