I think its this exact housing, 2.5" V- band and 44mm V-band for a wastegate. http://www.theboostlab.com/store/products/FP30-Style-Turbine-Housing.html
Only thing I am certain of is that it was originally on a GT3076R.
Make an offer.
Bump if anyone has a use for this send me an offer. I dont need this at all. Maybe I’ll put it on ebay.