Advantica Restaurant Group, one of the largest restaurant companies in the US, has extended its offer to exchange up to US$204.1m of registered 12.75% senior notes due 2007 to be jointly issued by Denny's Holdings and Advantica (New Notes) for up to US$265m of Advantica's 11.25% senior notes due 2008 (Old Notes), of which US$529.6m aggregate principal amount is currently outstanding.