I dynoed this combination in 1997. Not enugh mid range, too much fueling on the top end with stock turbo. Poor combination in the 215 hp pump. At the time of these tests, Mark and I began development of the 12 and 11 plates. I later developed the 10 for him to give even higher performance and mid range. If you will be running the stock turbo and clutch, don't go beyond the 11.