A rapid growth strategy has catapulted New Century Financial into the upper tier of the subprime origination market. But while the company has been able – so far – to fend off performance problems, a glut of risky new loan products could raise hurdles down the road. Founded in 1995, the California-based wholesaler is one of a handful of companies to survive a liquidity crisis that reshaped the subprime market, forcing many finance companies…