Not sure if it has been mentioned as an option yet, but I'm running a 10cm twin scroll HY35W and I make 273rwkw @ 20psi and start spooling around 3100rpm. It's probably actually more as my clutch fan died on the dyno and we were letting it cool between pulls. It's still pulling at 7800rpm. Another plus is these turbos new from Holset go for about 600$CDN.
Cheers.