Porsche has upgraded the 997 GT3R ahead of the 2013 season. We’ve already covered some of this in our earlier Falken Porsche N24 RSR blog, but it’s useful to look at Porsche factory pictures of the R.

The most obvious changes are to the aero package. Front bumper, wings, sill trims and underbody diffuser have all been optimised to produce additional downforce. The rear wing has been widened to full body width.

Longer wheelbase, increased track – 50mm wider front and rear – and 12-inch front wheels combined with improved aero performance allow higher cornering speeds.The 4.0-litre flat six produces 500 hp, sent to the rear via a 6-speed sequential dog ‘box with air shift and steering paddles. This is fast and smooth, and should be reliable.

Porsche offers a conversion kit for older GT3Rs at €45,500 plus tax. I wonder how many Euros that is per Nurburgring tenth of a second.