Typically stage 1 Revo makes around 285 on JKM rollers , with no other mods.
some cars see a bit more , based on that i would expect stage 2 to be around 310-320 max.
I dont think i have seen a stage 2+ hit more than 340 either on their rollers iirc ?
but its a massive willy waving dyno lottery , its great having the power but if its not useable then it means nothing.