Turbo back exhaust, FMIC, pod, more boost should see you around 180kw range.. With a fair few flat spots, and your car running rich.
So in this case, you have a few options..
One is to tune your car properly with an aftermarket engine management, such as Apexi Power FC...
With that all tuned up, you should hit above 200kw.. Dont forget to purchase a new fuel pump also..
Depending on where you live, check your state thread for details on workshops etc etc..
Heres a few sites that might help you!!
http://nissanskyline.6te.net/
Ok i only found one. .There was a site which had details about what each mod does and how you should go about doin it. Cant find the link anymore.. hmmm
Anyways use the search button here and you will find thousands of threads!!
Gdluck..