The little 194 will surprise you with boost. If you give it 5 lbs and control the timing, it will have no problems. The stock components can take the 5 psi with no problems, but no pinging is allowed.
What do you plan for carb on it? Maintaining the proper fuel and timing is key to longevity.
If those are kept proper, 8-10 psi could be in store.
Forget about the HP increase, think of the boost as a torq multiplier. You can see about a 5% increase in torq per PSI you give it. If the head and cam were improved, then the increase could get even higher.
