Knockhill in Scotland? There are a few corners on some rises, etc... where you need a car with good cornering ability and stability. In my view (admittedly, with very limited experience) this would probably be more important than high BHP as most of the track consists of lots of corners one right after the other.
Although, the main straight is on a rise - so it helps tremendously to have good acceleration to get up to speed crossing the start/finish line (on the crest) and good brakes to stop in time for turn one (heading downhill).
And.... I must admit, I've only ever driven around it once.

I simply must go back there at some point this summer when I've got my Milltek fitted and ECU remap completed.
