Thanks for the comments PM-R33!
I do have a later dyno print out somewhere from ESP Racing when SAU ACT had a dyno day which made 251 or 252kw @ 15psi. Just have to find it.
The clutch can be a handful if someone doesn't understand the way a button clutch engages (ie - my dad). Having said that, I love the clutch, it is softer than most button clutches (allows a little bit of 'riding' just to get you rolling in traffic).
Correct, 90db is the legal limit. With the larger bore exhaust on, the car sounds fantastic at full song. Even when I had it installed, I had no problems with police, it was only defected due to a random RTA inspection on the side of the road on the way to a SAU meet.
As for fuel economy, as with most cars, it really does depend on your driving style and the roads you drive on. I don't have any peak hour traffic to contend with on the way to work or home from.