Yes, a turbo would be needed to get that amount of Hp.
A full catback with a Sri would give you at the most 5 to 10hp. Where compared to a turbo, you could go up to 200hp. You would need the full turbo setup from a MSP, a FMIC would be a good choice, probably grab a LSD tranny while you're at it. And probably a few other goodies to be a trustworthy daily driven car.