I was wondering when they'd come out with a DSM version of that. That's the compressor wheel they've been selling for a while for Subarus. I believe it's a mirror image of the 68mm wheel that was developed for the Evo FP White. It's probably being sold with a TD05H since they're trying to market it as a quick spooling turbo (and that's how it was sold for Subarus - just toss a DSM compressor and exhaust housing on the same CHRA). They could probably custom build one with a 6SL2 wheel, but it'd be more expensive than a 20G since they can interchange the TD05H version between Subaru and DSM units. Also, the 16G compressor housing has to be ported out a bit.
Incidentally, the markings on the compressor housing of the turbo on the FP website are that of an old-school "Big" 16G (The VR-4 RS Variety). New life to old inventory that's getting dusty?
The few reports I've seen from the Subaru crowd are that it is pretty good - spoolup almost as good as an 18G turbo, with flow that's comparable to a 20G (47 lbs/min is FP Green/50-trim territory - in a factory Evo 3 turbo housing). Granted, any turbo is only as good as the rest of the setup supporting it.
That said, I'm guessing this wheel is probably somewhat limited by the small turbine, but it should give pretty good results when bolted on to a 2.0 L street engine.
Here is a comparison with some Subaru engines. The consensus seems to be that it's pretty comparable to a TD05-20G for a bit less money, both from the turbo itself, and fact that the housing is almost direct-fit and more compact.