He's a **** !!
But, in fairness he has done some nice work from what I have seen.
Im never particularly enthused by the latest greatest pop up tuner hailed as the next magician by some interwebdweebs that got a free rad cap !! But his S15 is an awesome looking thing and certainly goes well and his fabrication seems pretty decent assuming its genuinely all him for which i cant be bothered to check online or in real world either.
So if you can deal with his attitude, which some think means greatness, then go for it, he does have followers just like Tweenie did and I felt pretty much the same way about him, although he was a genuinely nice chap !!
Failing that you got Bob and Geoff at GBH in Colchester who I am obviously biased towards as he has helped me with everything since my GTR - 180sx, GT3, currently my RS4 and lots of others - and I dearly wished he had done that too instead of who did totally **** it up who are also still sort of in Colchester and who I hope never work on another GTR !! They are great and have done Skylines for donkeys years as well as every other Jap car you could think of, from new intercoolers to 2.4 Evo builds, you name it, they've most likely done it, even NSX's !!
Hope that helps.
J.