More horsepower, scoops move GTOs What do you do when your resurrected muscle car turns out to be a weakling in the marketplace? Add a pair of sleek hood scoops and some horsepower. Sales of the 400-hp Pontiac GTO -- 50 more than the 2004 model -- are up 76.9 percent through May, and dealers are short of the Australia-made coupes. Early sales had been disappointing since the December 2003 launch. For the first five months of 2004, GTOs sold at a rate that translated to just 7,300 a year -- well below GM's target of 16,000. This year, Pontiac says, it expects to sell 12,000 to 14,000. Pontiac spokesman Jim Hopson says Los Angeles is the country's hottest GTO market -- an unusual feat for a General Motors car. Critics griped about the 2004 model, which didn't have hood scoops or true dual exhausts. Says Hopson: "We listened."