Not sure about the 'stage' -but here goes;
Hybrid K04 Sport Turbos (Turbo Dynamics) with Mitsubishi GrpA Compressors,
Cermic coated pistons and hardened rods,
Modified cylinder heads,
Flowed intake manifold to match heads,
Ceramic coated exhaust manifold,
Full Milltek downpipes, cats and cat-back,
Carbon Dynamics air intake,
Sportec Intercoolers (40% arger than OEM),
Water Injection linked to boost and manifold temp,
6Bar fuel pressure regulator,
Tanoga lightened flywheel,
800nM rated paddle clutch,
1.8Bar boost (fully adjustable) with 16degrees of timing advance = 550bhp (more like 530bhp in my opinion)
Additional engine maps for 2.1Bar boost and 106 Octane fuel = 600+bhp (never dared try this one

)
Manifold tapped for Holley NOZ, +150bhp Wet System, Digital Progressive Controller, two rear Noz tanks. Additional jets for +300bhp.
Although the NOS was installed it was never connected, as I didn't have the balls to possibly ruin the clutch which was iffy to say the least. When it left me I kept the NOS bottles so I wonder if the guys who bought her ran her into the ground
Think I spoke to Thomas a few times re the Intercoolers, although my main contact was Jens Horner who left some time ago.
Cheers,
Andiroo