I finally got new turbo from USA. I had to wait more than 2 months.

It is GT 35R ball bearing turbo with ported shroud (anti surge).

Compressor AR 0.70, 56 trim, wheel dia. 61.4 mm
Turbine AR 0.82, 84 trim, wheel dia. 68.0 mm












Here it is compared with original Q4 turbo: