You've got to love this site for some of the crap talked!!! lol

In answer to the original question, a 0,48 turbine housing with the likes of a piper T2 on a low comp 1600 will always be 4K+ before fitting full boost.

I would recommend you fit a new std cam and a 0.36 turbine housing with 50 trim compressor wheel if you want a nice punchy 200bhp 1600 engine.

Of course it will need a decent chip and setup, and the best person for the chip is Tony (Turbosystems) so give him a shout!!