Only twenty of these were ever made and this was the first off the production line. You're looking at a R34 Nissan Skyline GT-R Nismo Z-Tune, which was built to celebrate the 20th anniversary of Nissan's performance arm, Nismo. These cars represented the ultimate factory-built R34 GT-R, but as they were created in 2005, years after the R34 had ended production, Nismo bought used models instead. In fact, only 12 were bought, the rest were donated by owners that wanted the conversion.

Painted a unique shade of Z-Tune Silver, the Nissan GT-R Z-Tune boasts a host of modifications, from a vented hood to bigger air intakes, and a reworked engine with a IHI turbocharger that delivers 493 hp and 398 lb-ft of torque. The quarter mile was said to come in just 10.06 seconds. In short, the R34 Nissan GT-R Z-Tune is the greatest Godzilla of that generation, and this particular example, #001 is now up for sale. The Lowdown says it has received offers of over 750,000 Australian dollars, which is close to $600,000 USD. That might sound like a truck load of money to pay for a previous-gen GT-R, but this thing is no ordinary Skyline. If you can afford it, buy it. There's no way this will ever go down in value.