For a remote mount, a Chinese GT45 turbine is way way way too big. Good turbos as Chinese turbos go, but too big for anything but front mount. Normally 1.15 or 1.35 a/r if I remember right, and a big turbine wheel. Even a 40 would need a small housing for a remote mount.
I just got a hx50 from compressor racing, they have one left I think. Chris is great to deal with. The one I have came with a 86mm compressor/60mm inducer/22cm turbine housing (85mm turbine/71mm exducer), I think the one Chris has left has a bigger compressor, maybe 92/96mm.
Cheers for the FYI Chodjinn - I picked up 2 hx40's dirt cheap (2 different turbine housings) - the turbos a bit smaller than yours but I'm remote mounting it (unless I fail miserably with it in which case I'll move it up front) lo