How much max power are these capable of?

[Ricochet]

I know money is always the limit, but realistically what can an awd svx top out at? 300, 400, 700+whp? Somebody asked me what an H6 can do and for what amount of money but I really have no idea. I know there is an ECUtune blower available but that doesn't seem to be the path to BIG horsepower.

I know this seems like an "If you won the lottery.." post, but I really want to know a ballpark power figure. That's why I put this in the tech area and not general babble.