that s2k from hell wasn't running 701hp through the whole video. that was only when he was at 30+ lbs. most of his races were at 15lbs or less. and from what i've seen that car is track only. hell half the body is carbon fiber lol. and idk about +800hp on stock internals. the one s2k may have been tuned at 701hp at one point but it's rough to run it like that on the street and for any extended period of time. they must have turned down the boost and re-tuned it.

the above s2k was pushing 33lbs on an AEM system.

+ a buddy of mine told me that the guy who owned that car (s2k from hell) blew the engine a while back.