The second generation GT3 takes all that was good about it's predecessor and then improves it! Power from the GT1 derived flat-6 is up by 20bhp (with an 8200rmp redline), ride height is lowered for increased stability and braking is just remarkable with the carbon/ceramic disks from the GT2 (although they are an expensive option at £5000!).
Two versions are offered, the more extreme 'Clubsport' showing it's track day colours with a full roll cage, racing seat and a 6-point harness. Considering how highly rated the original GT3 was, the new mark II could well be the greatest 911 of all time.