I think you should upgrade other parts like FMIC.. good zorst system and so on before strapping on a turbo. Anyway for around 200rwkw, i would go the HKS 2535 or something similar.
Thanks for the reply guys... Knore.. once you get defect.. your going to get whole car checked then you'll have to stick a cat back on... cops dont often look under your car for cat or not.