A very good stg1 engine/setup is 180bhp

rebuild bottom end
stage2 turbo
Pace front mount
chip
exhaust and filter

Thats all really stg1 stuff & an old cam..barring the Stg2 turbo..but it's only running at around 14psi, (any more and the pace interwarmer wont be much use, they are not much better than std)

The filter will be drawing in hot air....so i'd stick by my guess of 170@fly/ 140@wheels.