I didn't notice at first in your post, but Vortech and Procharger are 2 different companies.
The Vortech should generate more boost/HP than the Procharger, at least it did 4 years ago for the same application. Both units should have the ports available for adding the bypass valve, hoses, etc.
As Spencersr states, the valve won't give you more HP, but will prevent excessive boost pressure in the SC. I'd install it as a safeguard, especially if you're going to increase boost pressure over the stock unit.