It's all on the TUNE.
You can piece together a turbo kit for dirt cheap compared to the limited off the shelf kits.
My friend/tuner put 28.4lbs of boost to a
stock B16A, and it ran for a little over 3 years. It was the stock head gasket, the head was never off, only thing changed was the cams to GSR's and a valve adjustment. The head finally lifted because of the stock studs stretched, and cracked cyl #2's sleeve. The only time this car was ran was to beat the shit out of it.
And my friend Tyler has an eBay turbo kit on his GSR and it's been running for a while now.. at least 30k miles, and made a little over 400whp
It's all in the tune. Ditch the S200 and find a competent tuner