I'm not a mechanical genius but one of the first things i got my head around is that everythings to do with flow rates. I'm not dumb, I understand that just cause the turbo can flow that amount of air doesn't mean the motor will produce it. That all comes down to other factors within the motor and tuning. That is beside the piont.
A bit more on that VL. It is in Mackay, Qld. He bought the turbo off a guy in Mackay who had it made up for his Gen III ute, so yes I don't think the compressor efficiency would be desirable on the VL. He is basically running it cause he got the turbo and external Wastegate fairly cheap. He is running different cams (lift and Duration??? but they seem fairly aggressive when compared to normal turbo one's) He has gone for a Link because the turbo has a 4 inch inlet and he really doesn't want the restriction of an AFM, the link is closed loop as well, so that will be very helpfull. the tuner also likes the software with the link (not getting into arguements, I think PowerFC's are great and am considering one for my GTR with RB20 AFM's). I too reckon the power delivery will fairly late and fairly sudden and his clutch will be screaming for mercy after not too long. at least the engine bay will look good with this HUGE turbo sitting there!!!!!
I know you guys would probably want more specific info about it so i will try find out more later and post it.