The Wings that year had an average age of 32.1. The Penguins average age right now is 30.2.
Their two goalies were Osgood (35) and Hasek (43). Their top pair was Lidstrom (37) and Rafalski (34). Of the 20 players who played in 40 or more games on that team, 9 of them were 34 or older (the 4 previously mentioned, Chelios, Draper, Drake, Maltby and Holmstrom).
For comparison, the Penguins have 5 players who are 34 or older (Crosby, Malkin, Letang, Carter and Eller). Their goalies are 28 (Jarry) and 27 (Nedjelkovic) respectively. Their defense beyond Karlsson and Letang have a 28 (Graves), 27 (Pettersson), 24 (POJ) and 23 (Smith) year old. The majority of the Penguins' forwards are between 28 and 31.
Plus the 2008 team had an average age of 32.1. They were old as well, they just had a prime aged core.