PlatinumWRX, a TurboXS stage 2 WRX also has maximum torque by 3500 rpm. http://www.turboxs.com/utecstg2.htm
If you believe the TurboXS web site, it has more hp than the reported figure for the Evo.
Boostyle, IIRC, Shiv was getting much less than 230 whp. I'm guessing that the 230 whp might have been on a dynojet for which Shiv claims the adjustment factor is 1.19. This would make the crank hp 273.7, pretty close to the advertised 271. I wouldn't hazard a guess as to what the actual wheel hp or crank hp of the Evo is. Maybe they are understating the hp like Dodge did with the SRT-4.
All told, I would still be surprised if an "Evo VIII could take a TurboXS Stage 2 WRX."