ok, well you can run 7-9 lbs of boost pretty safly on stock intenals, with correct tuning and so on.....

I am setting up my turbo this summer, and I plan to resleeve the engine, get forged pistons with a compression of 9:2 and invest in a stand alone management system. So far my choices are the revhard kit or a drag kit, and with the built up motor I should be able to run 12lbs.

You would also need little things like, boost controller, turbo timer and so on to make your turbo more efficient and more reliable.