This is the AMS GT850R Ball Bearing turbocharger. This turbo features a ported T3 turbine housing with a 5 bolt discharge and is capable of 850 hp.
Spool time depends on many variables but full spool can be expected at around 4000-4500 rpm.
This turbo is a direct replacement for the turbo's in our GT37R kit but you will need a different oil return line, intake and lower intercooler pipe to replace a GT35R.