Sorry I read the article wrong... here's the quote; "probably the most popular option is the HKS 2835 Pro bolt on kit, rated at 370ps and capable of a bit more. For more headroom again, a unique option is the GT2837R from Power House Amuse.... The GT2837R is based on a Garret GT28 core, with a simularly sized exhaust housing to the HKS 2835 Pro, but with a larger compressor, which is simular to the infamous HKS 3037...." With std adaptor and manifold pipes the Chaser made 400ps on the dynopak dyno @ 1bar, 435ps @ 1.2bar and 455ps @ 1.3bar. Sounds like a fairly beasty turbo... and its a garret not a HKS