Supercharged WHP

I know at a Jackson Racing supercharger w/exhaust with the stock pulley at 6 psi will put about 235 hp to the ground. I was wondering roughly how much the upgraded 9 psi pulley will put down?

I'm really trying to decide between supercharger or turbo at this point. The able to put over 300 whp (my lowest goal) is what is keeping me heading in the turbo direction, but there is a lot I like about the supercharger. But if I change to the 9psi pulley won't I have to build the internals anyway so I should just go turbo? Or maybe supercharger with nitrous?

IMO I doubt you could hit 300whp with a JRSC - even at 9lbs, maybe close, but not 300. You'd need to hit at least 330hp at the crank, definitely need NOS and that's just more $ for 5-10 minutes of extra horsepower. If you're going to build the internals anyway you should just go turbo, you'll have more options than just JR.

If you're in it just for the HP number alone, then by all means go turbo.