It's the bridge porting...love it or hate it its a distinctive 'brap brap brap' sound. At those levels of boost and that sized porting those definitely don't qualify for anything streatable. But damn, those are some insane numbers.

Rotary's definitely have their niche, normally aspirated they are nearly bullet proof high rpm goodness for the road. Under 15lbs of boost and a little bit of mild porting and they make great street racers that last a 'reasonable' amount of time. Crazy high end tuned bridge ported, crazy boosted mad engines like those probably don't last much longer than any typical funny car engine, but its probably one of the least expensive ways to get seriously low numbers.

Oh, and I think a good mildly ported turbocharged rotary with decent exhaust system sounds pretty nice.