Rod,
I know you can do it - if you're prepared to accept an engine that doesn't make full boost until 5000rpm. However, driveability is what I want, rather than outright numbers, so for me achieving a a high power figure with a huge turbo is complete and utter waste of time for a track car .

My engine makes 0.7 bar at 3000rpm and 2.2 bar by 3500rpm, which it holds all the the way to the limiter and due to this, I personally wouldn't want to run any higher than the 7.3:1 that I am running, as I want good ignition values to keep engine heat at bay.

A top speed run lasts 35s? A lap of the Ring lasts 8mins.... .

Obviously you build an engine to its desired remit. To say it is stuck in the past is completely missing the point .