Buyers looking for shotgun acceleration will benefit from shopping the small/midsize truck field before settling on the 2006 Isuzu i-280 or i-350 pickup. Company officials have not released performance data, but figures should be nearly identical to the GM trucks on which the new Isuzus are based. The 2.8-liter equipped, base two-wheel-drive Chevrolet Colorado reaches 60 mph in about nine seconds, and the heavier, though more powerful 3.5-liter four-wheel-drive model achieves 60 mph in about ten seconds.