1969-1970 Ford Mustang Boss 429 Oem Master Engine Kit on 2040-parts.com

Porsche 918 Spyder starts at $845,000

Porsche has officially put the 918 Spyder on sale for a breathtaking MSRP of $845,000. And, as an incentive to those who order the supercar, Porsche also is offering the opportunity to buy a limited-edition 911 Turbo S, called the 918 Spyder Edition. It will cost $161,650 for the coupe and $173,050 for the convertible.

2014 Audi R8 priced at $119,150

The 2014 Audi R8 goes on sale Friday at the low, low price of $119,150 -- including destination and gas guzzler -- when equipped with the manual transmission. The S-Tronic-equipped version ups the price to $128,250. The base Audi R8 makes 430 hp and 316 lb-ft of torque from its 4.2-liter V8.

Concept Car of the Week: AMC AMX/2 (1969)

Like Detroit's Big Three, AMC rapidly understood the importance of the youth market after the success of the Ford Mustang. In the late 60s, the design team produced a series of "Think Young" concept cars to reach the younger audience as well as exciting new showroom offerings like the Mustang-inspired Javelin, the two-seater AMX and the Rambler. Presented at the 1969 Chicago auto show, the second opus of the American Motors Experimental series, the AMX/2 was not just AMC's most daring concept car ever, but one of Detroit's first acknowledgments that the future of high-performance sports cars would be mid-engined.