Not a worry for me. Mine is German! Borg/Warner T6 S480 80mm
It was purchased from Forced Inductions with upgraded 1.10 A/R turbine housing and the .83 turbine.
You should read up some on those turbo's! There is a 454 Nova with 2 of them that runs the 1/4 mid 8's. A couple of years on them too. MadDart is using 2 also. It has been stated that the machine work is good but to disassemble them and clean Thoroughly before use.