He did a full manifold/turbo/downpipe with twin wastegate/screamer pipe setup on my friend's 2JZ setup and everything was excellent fab work except for the "custom" turbo, which had to be changed twice now for oil burning and premature bearing failure.
From what I see and hear, he's pretty decent but his turbo building seems to be 50/50. I bought a new GT35R from him and he gave me the best price I could find anywhere, super nice to deal with too and even offered to let me bring back my turbine housing and swap it for a different sized one if after I installed it I didn't like how it behaved.