Three generations of Porsche RS models - Click above to watch the video after the jump

The new 911 GT3 RS might just be the most potent track car ever built for the street by Porsche, but that doesn't mean it's the first. The RS line goes all the way back to 1973 with the 911 2.7 RS when Porsche first combined an extra boost of power with the benefits of reduced weight. The original RS had impressive numbers for 1973: 210 horsepower, 0-60 mph in five and a half seconds, and a top speed of 152 mph.

The RS line continued through the 964, 993 and 996 model years, all the way to today's second generation 997 model introduced at the Frankfurt Motor Show last year. The 2010 911 GT3 RS might have significantly more performance than the 1973 911 RS - 450 horsepower, 0-60 mph in 4.0 seconds and a top speed of 193 mph, to be exact - but the inspiration remains the same as the original.

Porsche of UK has created a video highlighting both past and present RS models, featuring the 1973 911 RS and the 996 and 997 911 GT3 RS models on track. Needless to say, there's a lot of oversteer involved, and it's an informative and entertaining seven and a half minutes. You can watch the video after the jump.

[Source: YouTube]

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