The enhancement list is briefly listed as follows:
Custom Dyno tuned factory ECU reflashed using EcuTeK software. More info.
Complete turbo back exhaust. More info
Rebuilt 2500 cc (Sti Semi closed Deck) engine, with:
forged pistons and
HD connecting rods
400 HP Garrett turbo, with housing designs optimized for responsiveness.
Redesigned fuel delivery system.
Brake booster support bracket. more info
Limited edition model badging.

Whiteline:
Group 4 Adjustable Struts front and rear.
Front sway bar
Rear adjustable sway bar.
Advanced geometry modifications.
Chassis bracing.

Other options will include:
Short shift kit
Large capacity radiator. More info
Top Mount Intercooler OR More info
Front mounted intercooler. More info
HID lamp kit more info
Anti Surge fuel kit
Oil cooler
Power Steer cooler
Large capacity anti surge sump
Front spoiler
Upgraded intercooler water spray tank. More info
Adjustable rear wing

Resources:
For further info on MRT's testing on 2500 cc engines refer here

	Independent magazine stories
	For a complete report on this car, including costs, dyno data, track testing and more click here
	Read the road test by The Sydney Daily telegraph here