So on turbos alone I would be happy with that. The Supra had less mods than my car but that is still a good number. I am not going to boast about numbers right now however the turbos themselves depending on Turbine A/R housing have known to produce anything from 680RWHP to 830RWHP on boost alone. My turbos are using .61 A/R turbine housings that have been ported and extrude honed, I may switch to .73s later or maybe for get crazy one day and put the 1.12 A/Rs to see what turbos would max out but I kind of already know that as well but would be interesting to prove a point.
However even with the smallest A/R the car is still 4K+ RPM car. So it is a toss up.