that still doesn't sound correct.
A GT3076 is most likely to be a 60mm turbine and 76mm compressor and is a 500hp turbo. Capable >300rwkw
There a few 56mm turbines floating around (which have been used on older style IW GT3071's so unless you buy the genuine garrett item there is a bit of mix and match possible.
The turbo looks more like a 2860 aka 2530 so more like 230rwkw but they have clearly machined out a bit for the new turbine.