Did nobody catch that he said it's a 71mm, 95mm (which is more than likely really 96mm). The 71mm compressor has a 101mm exducer so he has to be refering to turbine. That means it has a T6 (most likely 1.32 AR turbine housing on a 96mm turbine and it is not at all a turbo you could run as a single - it would never spool up. I do agree that a 71mm compressor is a little small to run in a twin setup - a 75mm or 80mm would be better. To run it as a single you would need to swap to a T4 housing and 83mm turbine, which would also require a new center section. I have new and used S475 and S480 wheels and covers sitting here.