looks kinda like the td04h 15g turbo i just sold but your's is more clean lol

AiReasearch garrett small frame full t3, internally gated, 5 bolt ford style turbine housing, most likely wet float bearing. kinda going out on limb here but judging by the compressor housing and inlet id guess its a small 50 trim compressor comparable to a MHI 20g. also looks to be water cooled. that one was kinda obvious though. hope this helps