Try again mate. The GT4202 is a 1000hp turbo, BIGGER than a GT4294 (850hp)
The GT4202 is also the same size as a T51 so its no brainer that they would be making similar power.
A 42 size turbo at target boost by 3800rpm??
Show me these results and ill buy 10 of them.
And if are serious about more response and more power the turbos I would pick:
TS GT4088
TS FP3794