yes, around 8000rpm, with a big turbo, but would be expensive and no DIYengine.
Karls CBH heads are very very cheap for what they are - For less than 500quid ur getting a head that will HAPPILY do 340bhp - more than anyone needs. If u want a 500hp head, its going to cost u, as the valves need relocating, shit loads of welding etc etc.
Seriously, if u want to rev, why not use a 1600? Trust me, i went through all this in massive Depth, and thats why my big spec engine is 1600. It is SOO driveable, and yet very very revvy.
Rick.