Timing Chain
The Lancer ES has a timing belt that should be changed every 100k miles. I own a Lancer ES myself, and found out the hard way, when the belt on mine broke.
Timing chain
It has a timing chain.
It has a timing chain.
Timing belt
Chain
chain
It has a timing chain.
It must be a timing CHAIN ( the Gates website does not list a timing belt for the 3.5 )
The 2.0 has a timing belt.
3.8L has a timing chain. 4.0L has a timing belt.