No, Dzljet was a Beta Tester/Buyer on the UPsolute Stage III kit that had a GT20 turbo on it. It's my understanding, folks were going nuts with the setup as the turbo outlet went straight up into the engine bay rather than down under the car which caused a really tight fit with intake and IC pipes. But the setup worked. It was feedback from a couple folks (not dzljet) who weren't very happy working the plumbing out that got Rene to change to the new T3 turbo or whatever it is. That's the story I've heard, don't know if it's 100% fact. I guess now, it fits better w/T3 but the turbo doesn't spool as good as the GT20. Or at least that's the impression I've gotten. I'm told this could be nothing more than installer error and I have to believe that could be true based on what I've seen in my time. I know this, Dzljet was up my way in June and he could eat my modded vnt eqpd TDI at will in any range with no spool issues.
The overall setup with injectors/mapping etc. on T3's may be at odds, to be honest, without driving one and testing one out for setup, boost leaks, install error stuff, I'd hesitate to pass judgement on it just yet. I'd love to see one!!
The KP is not supposed to have a cut shaft as I recall, I'll try to confirm this. I've been to Dzljet's and seen vnt 17's taken apart with cut shafts, I've also disassembled vnt 15 with similar looking shaft. So I know for sure the vnt's are all cut.
Even still, they should be good for 150K miles, they just get broke due to clogging of intake and resulting spool issues. Keep a clean system, run boost at about 18.5 max sustained and/or it would be really wise to keep temps down by a variety of methods. IC upgrade is a must IMO, 20 psi could be done daily but not for excessive amounts of time, particularly with the setup you want.
I won't get into chips, most know I try to stay nuetral there, but I believe regardless of tuner, the setup you want can be reliable within that range but you must make hardware changes. I guess it depends on overall power and how and when you want it delivered. I've driven RC and UP, I know which one I like but I'm aware that's my personal choice and I won't push it on others.