Is a Toyota 3.3 Liter DOHC V6 Engine an interference engine

What is your question?

I'm thinking of changing the timing belt at 138,000 miles. I won't change it if this engine is a non-interference engine.

What makes this problem better or worse?

It's running now.

How long has your 2004 Toyota Sienna had this problem?

Planning on a optional mainternance.