Here is a link to a photo of dyno #'s for a P10 with custom turbo kit.
http://members.shaw.ca/maried/april_p10_dyno%20copy.jpg
208 hp @ 5900 rpm, 182.9 lb/ft @ 4900 rpm
custom T28, 370cc injectors, 2.5" exhuast, JWT 4 bar w/Cobra MAF

It's on a DynaPack 3000 "hub dyno"

A close up of how the dyno connects