I am in the process of rebuilding a 1993 Nissan altima. The 93 - 97 having timing chains. It has an upper and a lower timing chain. Hope this helps
Belt
2.4L timing belt.2.7L timing chain.
..The 2005 model is the 1st of the gen-2's and therefore has a chain in the v6, previous models; considered gen-1's and had a belt...
The 3.2 liter - V6 - in a 2005 Acura TL has a timing BELT ( according to the Gateswebsite , they make timing belts etc . )