Shares of Irvine-based Autobytel jumped more than 30 percent in late trading Friday on news the company bought Redwood City-based Dealix , which provides sales leads to auto makers and their dealers and operates UsedCars.com Autobytel expects the $25 million purchase of Dealix from owner CDK Global will contribute to its bottom line this year. Autobytel is a microcap stock, with a market cap of just $179 million.