Mass-market muscle.

Byline: Story and Photographs by Dan Mayfield DMAYFIELD@ABQTRIB.COM / 823-3620

Deep-six those big V-8s. Rocketing demand for four-cylinder, foreign-built racers creates a new breed of hot-rod shop.

It's not your father's lowrider. You would never know it at first glance, but Markin Demsey's car was once a Chevrolet Cavalier a car loved for its practicality, fuel economy, cute looks and cheap insurance rating.

Now, after more than $8,000 in modifications, the car is something different, something meaner, faster and louder.

"It's real good. It's got a lot of pull for street racing, light-to-light, when you hit 90 miles per hour," Demsey says.

Cars like Demsey's, with four cylinders called "euro style" or "pocket rockets" that can hustle as fast as Corvettes and look like they peeled off the screen of a Japanese cartoon, are the hottest trend in the $25 billion car-customization market.

The market, say shop owners, is overwhelmingly male. But many guys and a few girls in their late teens to early 20s are spending most of their paychecks on their cars, dropping as much as $50,000 on a Honda …