[Dave ZS-X]

Yeah you could get a nasp zs to 240-250 imo, gtm's kv6 will be in the ball park when its done but you will need to spend the big bucks to achieve it. Not sure what steves spec is but it seems hes spent some serious wonga so he must be hoping for some serious results to match the outlay.

No doubting a zs can be made to handle 240-250 bhp quite easily, mine did ok, but what an otherwise standard zs would be like with that power is another thing. I guess the standard cars inherent weak points will just be amplified but it shouldn't be a problem as you just drive to the new limits.
Imagine how i went on on my first drive home from reyland with double the torque and another 130 bhp midrange, now that was interesting !!
Power delivery is one of the major points and in that respect it should be good because peak torque wont alter much and delivery should be smooth and linear, there will be no sudden lump of power to upset anything, infact low down revs i imagine it will be no different to standard as low end torque with no vis will be down a bit i should think.
Will be an interesting ride no doubt but as always i guess it all comes down to money, no doubt steve would love an lsd, big brakes etc all of which would add to his cars performance, but you just do one step at a time as and when dont you, like i did for 5 + years.lol.