The Vortech system costs just shy of 3k iirc. I'm on my phone so it's not the best for linking but go to funkypower.co.uk and you'll get the figures there
Internals wise, my engine is completely standard and runs perfectly. But the raised cr of a b16b would probably change things somewhat. "Turbo's are best" is a bit of an outlandish claim really. Depends what you want! There is no definitive answer as to what's best.
Just to add, with just a 4-1, decat system and Skunk2 inlet mine made 277 at the flywheel for a rough figure