Anyone had any dealings with NRG from Sydney?

I've just acquired a VF22 turbo that they supplied and, well, it isn't standard...well it's got me and a local tuning guru (of the un-kempt variety ) curious...

The core and exhaust housing are standard VF22 (P20 housing) but the compressor housing and compressor wheel apear to have been modified, not dramatically, just not your normal VF22


Anyone of here or down under bought one their turbos, and can tell me what's been done?