AFC + ITC + EBC? That costs about $1700-$2000 plus fitting and tuning you could drive away with a Full plugin ECU tuned etc for around $2000 that will do all this and more.
GTSs only need the exhaust gear at around $180
Hybrid coolers are hitting the market in weeks for about $1000
from Works and PER4MANZ.
All the good go fast parts are coming down in price because of the size of the Jap performance market world wide so their fun times ahead at a good price, we will have a huge list of wild parts
soon( About 4 weeks) at mega cheap price and all parts will be priced in Australia with Australian warranty- no risk of customs probs.