rb 20 actuator. for 10psi goodness.
better dump and front pipe. high flow cat.
front mount cooler. all can be had for a total of 500 bucks if you look hard enough.
now with an auto, you will need a stage two shift kit and an oil cooler for the transmission. thats gonna be 650 upwards for all that paid for and fitted.
then its fuel pump, injectors. 300+ bucks
ecu, safc 2 is your cheapest bet. 200 upwards.
then turbo. cheapest is highflowing yours. 880 bucks.
tune on a dyno to set it up. god knows. but all that should see about 220+kw at your wheels. with the auto.
(just going off the same pattern as mine but mine is an r33)